Dom 1.5 vs FP blue

[wrxchitown]

Looking to upgrade from my stock turbo to something bigger. Hoping to get close to 450WHP with descent power below 4000 rpm on e85. I’ve read countless reviews and dynos with the dom 1.5 but can’t find much on the FP blue. It seems like with the dom 1.5 I should expect 375-425 WHP. I saw the Jr tuned FP blue hitting over 500WHP on e85 but not sure if that is normal for this turbo, a high reading dyno, or just perfect scenario pushed to the limit. I’ve also noticed most people running the blue have an EWG. I’d prefer staying IWG if possible to keep it quite. I guess my question is 1. will the blue put down more top end power without giving up a ton of spool(+25-50HP and 200-300rpm later spool)? 2. How much of a difference will running the EWG make?

My build:
2015 sti
Killer b ELH, ID1300, iag fuel line kit with aeromotive FPR, iag tgv deletes, iag fuel rails, AEM 340 fuel pump, grimspeed TMIC, Cobb sf intake with box, Cobb flex fuel kit.

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[Nightwingthief]

The fp turbos are laggy in my opinion. I currently have an fp green htz and I'm going to move to a 20g. Depending on mods you can get a lot out of a 1.5, check out this comparison it will give you a lot of data to make an informed decision. https://www.preracing.com/articles/turbo-showdown

External waste gate Vs internal well depends on factors. External will give you better boost control but I would debate spool up difference with a reputable turbo manufacturer as your internal waste gate should seal properly and your actuator should be of decent quality. If they are not then you will see a difference in spool because the external will seal properly and allow for max boost build without leaking.

So here is the question. What do you want to do with your power? I can recommend several turbos that will get you to 400-450 on e85, you can look at a Borg Warner efr, hands down the best response turbo around. A gtx3067r will also get you there and still maintain excellent response, td06-20g or a td06sl2-20g will also get you there. Another awesome bolt on option is the precision turbo, if you speak to the drag guys you will find they love the precision turbos as they tend to perform better than the rest under high boost.

[wrxchitown]

I saw that comparison and that's a big reason why I have been leaning towards a dom 1.5 10cm. I asked FP why the hta71 performed so poorly compared to the dom 1.5 and they claim that it was an older model with a small housing so it doesn't pair good with the 2.5. With that being said what mods and gas are you running with your blue and where do you start spoiling and what psi are you running?

[Nightwingthief]

I run a green htz which only starts to spool at 4k on 93 with meth injection it's at 24psi on an external gate. The blue runs a large turbine wheel so its going to spool slower than the competition, in comparison the 1.5 is a better turbo in my opinion. Plus my my tuner also echoes my sentiments that the fp stuff is more laggy that what is available. But again what is your goals with spool? With the green I feel it killed my car as it's now dead below 4k and daily driving it has removed a lot of fun that's why I'm going back to a smaller turbo to hit 400 at 24psi

[subaru_gc8]

lag is really not a big deal. you are slitting hairs even if you can spool 300 faster... which is a good amount, youre going to have to down shift anyways. to be honest, if you are goint o push your 4 banger, downshifting is going to have to happen anyways. the biggest problem that I see with alot of the stock location turbos is they all have small turbine housings, which limits the efficeincy of the turbo in the first place. so even if you get a 10cm which is really as big as they get, your going to be choking the turbo on the top end ie thr reason why they all drop off at 6500 when you should be able to mka power all they way to redline.. So my suggestions i just go rotated or spoolinator and get a 82 ar and call it a day. youll make more power.

so getting back to lag.. if you dont want lag, do a h6 build, or sell your sti and get something with a v6 turbo. Instead of trying to make your car into something that it is not

[wrxchitown]

I agree that lag isn't a big deal to a point. If I am gonna be able to hold boost to redline but loose 200-300 rpm in spool I'm ok with that. But if I'm only making a few more HP and loosing 500 rpm I'm not ok with that. looking at the PRE racing comparison the dom 1.5 10cm hits 300WTQ at 3700RPM max 472WTQ hits 470WHP at 5600RPM but falls on its face after that dropping to 410WHP by 6500RPM. according to the JR review the blue it hits full boost by 3800rpm and holds till redline making 525WHP 527WTQ. if that is achievable and not a crazy inflated dyno it is better than the dom 1.5 in everyway.

[Haevn]

i just upgraded from stock vf52 to the fp blue with 84mm housing ported and coated. i am still in the early stages of e tuning since i did a bunch of upgrades at same time, ie 1050x injectors, fuel lines/rails/fpr and the bnm elh. as of right now i am at 20psi @ around 3800 and pulls hard to red line. i am on ewg 44mm with grimmspeed ebcs. i am still waiting on next map update because im still on same wgdc as stock turbo so i am bleeding to 16psi at 7k. all i know is that once 10-12 psi hits the turbo just wants to take off and keep going lol

[subaru_gc8]

Originally Posted by wrxchitown

I agree that lag isn't a big deal to a point. If I am gonna be able to hold boost to redline but loose 200-300 rpm in spool I'm ok with that. But if I'm only making a few more HP and loosing 500 rpm I'm not ok with that. looking at the PRE racing comparison the dom 1.5 10cm hits 300WTQ at 3700RPM max 472WTQ hits 470WHP at 5600RPM but falls on its face after that dropping to 410WHP by 6500RPM. according to the JR review the blue it hits full boost by 3800rpm and holds till redline making 525WHP 527WTQ. if that is achievable and not a crazy inflated dyno it is better than the dom 1.5 in everyway.

true, and that i what I was saying about these stock location turbos. I was told that subarus need lots of room to breathe and these turbine housing choke them up like you cant believe. So they have to compensate with a bigger turbine or compressor wheel. But if you just go rotated, you can get a bigger turbine...10cm I think is around a 68ar or something like that, you dont loost alot of spool but you will gain something that will go all they way to redline.

[wrxchitown]

Originally Posted by subaru_gc8

true, and that i what I was saying about these stock location turbos. I was told that subarus need lots of room to breathe and these turbine housing choke them up like you cant believe. So they have to compensate with a bigger turbine or compressor wheel. But if you just go rotated, you can get a bigger turbine...10cm I think is around a 68ar or something like that, you dont loost alot of spool but you will gain something that will go all they way to redline.

I would love to go rotated but between the extra money and having to pass smog every 2 years I have decided to go stock location. if money and smog wasn't an issue I would go with the ETS rotated kit with a g30-770 and their FMIC kit.

[Jarky]

I dont have any experience with the FP blue but here is a dyno sheet for my Flex Fuel Dom 1.5 xtr 10cm build. It feels plenty of pep down low and doesnt fall too much up top.


Open Deck

Forged CP pistons 99.75
Forged Rods
Sti Crank
+1 Intake/Exh Valves
Mild Port
GSC S1 Cam


Fullrace ELH
AEM Intake
Grimspeed TMIC
TGV Delete
Fullrace ELH
DW300
ID1300
3 Port EBCS
3" catted DP

[wrxchitown]

Originally Posted by Jarky

I dont have any experience with the FP blue but here is a dyno sheet for my Flex Fuel Dom 1.5 xtr 10cm build. It feels plenty of pep down low and doesnt fall too much up top.


Open Deck

Forged CP pistons 99.75
Forged Rods
Sti Crank
+1 Intake/Exh Valves
Mild Port
GSC S1 Cam


Fullrace ELH
AEM Intake
Grimspeed TMIC
TGV Delete
Fullrace ELH
DW300
ID1300
3 Port EBCS
3" catted DP

That looks awesome. Almost too much torque down low. How Much boost are you running?

[heiche]

Originally Posted by Jarky

I dont have any experience with the FP blue but here is a dyno sheet for my Flex Fuel Dom 1.5 xtr 10cm build. It feels plenty of pep down low and doesnt fall too much up top.

Healthy torque curve! That must be a lot of fun to drive. How is your drivetrain holding up? Did you make any mods (beyond engine) to handle that power?

[BlackFighter]

I had a HTZ FP Green with a anti surge 84mm FAP housing on my STi, don't remember when it spooled but deff before 4k, i think it was around 3700 or 3800. It was great for a DD and i sit in traffic most of the time, not a big deal. I also had ALL supporting mods and more like intake, FMIC, built eng, upgraded fuel system, injectors, full open pipe exhaust.

[subaru_gc8]

Originally Posted by Jarky

I dont have any experience with the FP blue but here is a dyno sheet for my Flex Fuel Dom 1.5 xtr 10cm build. It feels plenty of pep down low and doesnt fall too much up top.


Open Deck

Forged CP pistons 99.75
Forged Rods
Sti Crank
+1 Intake/Exh Valves
Mild Port
GSC S1 Cam


Fullrace ELH
AEM Intake
Grimspeed TMIC
TGV Delete
Fullrace ELH
DW300
ID1300
3 Port EBCS
3" catted DP

how much boost are you pushing? you say it doesnt fall off but your pull doesnt even go to 7000.. its also interestingthat youa re getting way over the 48lb per min rating too

[Jarky]

Originally Posted by wrxchitown

That looks awesome. Almost too much torque down low. How Much boost are you running?

It feels really good for a stock location turbo. I, like you, would love to run a ETS rotated G30 770 with FMIC. But its alot to manage as it is with SMOG, BAR, CHP, state ref, irresponsible car enthusiasts attracting unwanted attention. Anyhow the car is a handful with the torque, I usually run a lower power map and/or a lower blend of e60 or so.



The peak boost varies with the fuel blend but its approx 21 lbs on 91 and 23 lbs on e85.

[Jarky]

Originally Posted by heiche

Healthy torque curve! That must be a lot of fun to drive. How is your drivetrain holding up? Did you make any mods (beyond engine) to handle that power?

It is indeed alot of fun to drive. I had to basically modify all of the drivetrain for this type of power. The WRX 5 speed was giving me grief on stock turbo+bolt on type power levels. The drivetrain mods:


Cusco Engine and Tranny Mount
Beatrush forged Pitch stopper
Beatrush Transmission/Crossmember Bushings
V7 STI Non DCCD 6 speed
STI Flywheel
Southbend Stage 2 Daily Clutch (not enough and slips)

05+ Helical Front LSD

DSS 1 piece Carbon Drive Shaft
R180 with Suretrack LSD
STI rear Axles

[Jarky]

Originally Posted by subaru_gc8

how much boost are you pushing? you say it doesnt fall off but your pull doesnt even go to 7000.. its also interestingthat youa re getting way over the 48lb per min rating too

About 23lbs on E85. Power tapers off up top but I dont feel like it falls off a cliff like it did on VF-52. I don't pay too much attention to the numbers on this graph as much as the curves. It could be a higher reading dyno. The additional headwork could be aiding the numbers as well.

[wrxchitown]

Originally Posted by Jarky

About 23lbs on E85. Power tapers off up top but I dont feel like it falls off a cliff like it did on VF-52. I don't pay too much attention to the numbers on this graph as much as the curves. It could be a higher reading dyno. The additional headwork could be aiding the numbers as well.

i would assume the head work would help a little up top.

[wrxchitown]

In my research I saw somebody that has a Blue and likes it but says if he was to do it all over again would have gone with a BCP X500+. another turbo that i have never heard of lol. looking at there site it seems very comparable to the blue. Any thoughts on the x500 or x500+?

[Nightwingthief]

Here is some info on the x500 for you. https://photos.google.com/share/AF1QipOgv6bNKYJOfeYX_R44pdUEsf4xVJUMrl0OFqhH65FuSb sN3dc_uIN7vjjDuPtZbg?key=Q1lyd195dE43d0RtRGo3MzhYb jNqV2V5YTJPMWR3

Having said that. I have an fp product and customer service is something I value, I would caution you to take that into account when making your purchase.

[wrxchitown]

Originally Posted by Nightwingthief

Here is some info on the x500 for you. https://photos.google.com/share/AF1Q...NqV2V5YTJPMWR3

Having said that. I have an fp product and customer service is something I value, I would caution you to take that into account when making your purchase.

link not working

What are you referring to about customer service? have you had a bad experience with any of these brands? I heard that there was something going on with FP and the subaru community at one time but never found any details.

not sure why but your link works in this post but not your original post. thank you for posting them that is a lot of info. The graphs look like what I am looking for. I also saw that Fathouse did a dom 1.5 dyno so its nice to see the difference between the 2 on the same dyno and the same tuner. Of course there are other variables that come into play but at least its some sort of a reference.

[Gab0]

Originally Posted by Jarky

I dont have any experience with the FP blue but here is a dyno sheet for my Flex Fuel Dom 1.5 xtr 10cm build. It feels plenty of pep down low and doesnt fall too much up top.


Open Deck

Forged CP pistons 99.75
Forged Rods
Sti Crank
+1 Intake/Exh Valves
Mild Port
GSC S1 Cam


Fullrace ELH
AEM Intake
Grimspeed TMIC
TGV Delete
Fullrace ELH
DW300
ID1300
3 Port EBCS
3" catted DP

Gabriel_Lopez_ACN91_vs_E60 by Gabo121

There are some differences in our builds. My car is a Spec B as well so gear ratios are slightly different from those of an STI. Additionally I have completely stock cylinder heads. You most definitely have a broader torque range than I do and make more power down low which I would attribute to your cams and dual avcs which My Spec B does not have.

Vehicle Specs:
2007 Spec B
Forged SB ( CP 9.0:1 Compression Pistons)
Outfront Motorsports Custom Rods (Equal to or better than Manley Turbo-Tuff)
Dom 1.5 XT-R, 10CM, 2.4 Inlet, Internal Wastegate
ETS FMIC
KSTech 73mm Intake with heat shield
TGV deletes with phenolic spacers
Secondary Air Pump Delete
AVO Inlet
Killer B Holy Header w/ uppipe
Grimspeed Catted Divorced Downpipe
Infamous Stromung V2 Exhaust
Grimspeed 3 port EBCS
DW 1300cc Injectors
DW300
Southbend Stage 2 Endurance Clutch
STI OEM SM Flywheel
Delicious Tuning MK2 Flex Fuel Kit with custom dyno tune from Bill himself.
Accessport V3

[Jarky]

Originally Posted by Gab0

Gabriel_Lopez_ACN91_vs_E60 by Gabo121

There are some differences in our builds. My car is a Spec B as well so gear ratios are slightly different from those of an STI. Additionally I have completely stock cylinder heads. You most definitely have a broader torque range than I do and make more power down low which I would attribute to your cams and dual avcs which My Spec B does not have.

Vehicle Specs:
2007 Spec B
Forged SB ( CP 9.0:1 Compression Pistons)
Outfront Motorsports Custom Rods (Equal to or better than Manley Turbo-Tuff)
Dom 1.5 XT-R, 10CM, 2.4 Inlet, Internal Wastegate
ETS FMIC
KSTech 73mm Intake with heat shield
TGV deletes with phenolic spacers
Secondary Air Pump Delete
AVO Inlet
Killer B Holy Header w/ uppipe
Grimspeed Catted Divorced Downpipe
Infamous Stromung V2 Exhaust
Grimspeed 3 port EBCS
DW 1300cc Injectors
DW300
Southbend Stage 2 Endurance Clutch
STI OEM SM Flywheel
Delicious Tuning MK2 Flex Fuel Kit with custom dyno tune from Bill himself.
Accessport V3

Nice build! Bill is a great tuner to work with and I am happy with his work. It is interesting to see such a similar Dom 1.5 build. The other major differences I see are you have a 9:1 compression ratio and I have 8.5:1 (wrx/ej255), and I went with a TMIC and you have a FMIC. My heads are actually from a 13 wrx so I have Single Avcs. How is that southbend Stage 2 endurance clutch holding up? I have the stage 2 daily and it slips.



Sorry to steer this thread a bit sideways wrxchitown. Hopefully seeing these builds gives you a better idea of what kind of results are possible.

[Gab0]

Originally Posted by Jarky

Nice build! Bill is a great tuner to work with and I am happy with his work. It is interesting to see such a similar Dom 1.5 build. The other major differences I see are you have a 9:1 compression ratio and I have 8.5:1 (wrx/ej255), and I went with a TMIC and you have a FMIC. My heads are actually from a 13 wrx so I have Single Avcs. How is that southbend Stage 2 endurance clutch holding up? I have the stage 2 daily and it slips.



Sorry to steer this thread a bit sideways wrxchitown. Hopefully seeing these builds gives you a better idea of what kind of results are possible.

The Stage 2 Endurance is holding up great. No slip at all, going strong for almost 3 years now. 1 year at 500 WHP and 2 years at 360 WHP.

Considering you are single avcs as well I'd say the cams would make a great addition for those of us that daily their cars.

[Unabomber]

My biggest beef with FP is their odd inlet sizing. You can bolt up a XXXX Turbo to a stock or aftermarket inlet. FP's are oddballs. Can you stretch to fit or do you buy their specific inlet which is not backwards compatible...so once you go FP inlet you are stuck with. I don't like that considering the cost and install drama. I chewed on this for a few weeks and went Blouch mainly over the inlet issue.