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Old 05-16-2010, 02:16 PM   #251
blackdub06
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What would the best turbo be for me to get to 450whp with the quickest spool on E85?

Hydra EMS
Wiseco Pistons 9.1:1 stock bore
Eagle Rods
ACL Bearings
ARP Head studs
Kelford 264 cams
Supertech valves and dual valve springs
TGV deletes
RC 1200 cc injectors
Perrin fuel rails
Aeromotive fpr
walbro 255 fp
samco turbo inlet ( will be changing to 3in inlet)
turbo xs fmic
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Old 05-16-2010, 04:05 PM   #252
rexblake
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450whp you'd have to go with the Dom 4xt-r. That should hit it pretty easily on E85. I'm not sure if your injectors or fuel pump will be enough for E85 though. You can raise the fuel pressure of course, but the Walbro doesn't seem to enjoy that a whole lot. Check to see what some of the guys are doing for fuel with dom 4's or gt35r's.
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Old 05-16-2010, 06:37 PM   #253
blackdub06
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Yeah I figured I would need dual walbros so no big deal there. I was hoping to be able to squeeze 450whp out of something like the 3.0 XT-R rather than the 4.0. I will just have to call Blouch and ask.
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Old 05-16-2010, 06:52 PM   #254
rexblake
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Good idea, it's really going to depend on the dyno and how much psi your willing to run. I made 392whp on 28psi with E85 on a dyno dynamics, SAE corrected it's right around 440whp. My ejectors are maxed (90% idc's), as I am imagining, is the pump (1000cc, 255walbro).

So it's theoretically possible. You'd be absolutely maxing that turbo out though. The Dom4xt-r should be able to do it pretty easily.
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Old 05-16-2010, 07:29 PM   #255
Phatron
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i would go with the dom5xtr if you're trying to run that everyday.

it takes me 26-28psi to hit 450whp with the dom4xtr....

if you want to do it the best way then go rotated gt35 then you can swap turbine housings around to find the best powerband for your personal preference.
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Old 07-26-2010, 01:43 AM   #256
jnorth85
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here is my 3XTR

91octane
20 PSI
100* ambient.

[IMG][/IMG]
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Old 07-30-2010, 09:50 AM   #257
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Anybody have any Dom 3 XTR quarter mile times? Also, what octane were you running?
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Old 08-22-2010, 12:26 PM   #258
dexterous
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Quote:
Originally Posted by blackdub06 View Post
What would the best turbo be for me to get to 450whp with the quickest spool on E85?

Hydra EMS
Wiseco Pistons 9.1:1 stock bore
Eagle Rods
ACL Bearings
ARP Head studs
Kelford 264 cams
Supertech valves and dual valve springs
TGV deletes
RC 1200 cc injectors
Perrin fuel rails
Aeromotive fpr
walbro 255 fp (totally maxed out and in need of upgrade
samco turbo inlet ( will be changing to 3in inlet)
turbo xs fmic

I run a Hydra too and my car hit 461whp on a 3" Dom3-XTR with 93 & 50/50 meth on 26PSI of boost (hydra). Here's my full mod list:

Hydra Nemesis 2.6 ECU
Hydramist Water/Meth Injection (Using 50% Meth & 50% Water)
STi Spec-C Water Tank (for meth)
25 Row Setrab oil cooler w/-10 AN Lines
200F Mocal Sandwich adapter
Apexi AVC-R Boost Controller
Hallman Pro RX MBC (hybrid setup with AVC-R)
APS 70MM CAI
APS DR725 FMIC
APS 3" Turbo Inlet
Dominator 3 XTR Turbo w/3" inlet, 55lb billet wheel and 10cm hotside
GT-Spec Header/Up-pipe combo w/external wastegate
TiAL 44mm EWG
Supertrap silencer for the EWG dump tube
TurboXS down-pipe
Custom catless mid-pipe
Cobb muffler
Deatschwerks 950cc Injectors
Perrin Fuel Rails
Walbro 255lph Fuel Pump (totally maxed out and in need of an upgrade)
JDM TGV Deletes
Phenolic Spacers
Peterson breather can
Mishimoto racing radiator w/Mishimoto shroud & fans

Note that I run the STOCK cams and that the hydra's boost readings are much lower than most other map sensors. My AVC-R for example says that I am running a max of 29psi.

Last edited by dexterous; 08-22-2010 at 01:56 PM.
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Old 08-22-2010, 05:34 PM   #259
Fierysun
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Quote:
Originally Posted by dexterous View Post
I run a Hydra too and my car hit 461whp on a 3" Dom3-XTR with 93 & 50/50 meth on 26PSI of boost (hydra). Here's my full mod list:

Hydra Nemesis 2.6 ECU
Hydramist Water/Meth Injection (Using 50% Meth & 50% Water)
STi Spec-C Water Tank (for meth)
25 Row Setrab oil cooler w/-10 AN Lines
200F Mocal Sandwich adapter
Apexi AVC-R Boost Controller
Hallman Pro RX MBC (hybrid setup with AVC-R)
APS 70MM CAI
APS DR725 FMIC
APS 3" Turbo Inlet
Dominator 3 XTR Turbo w/3" inlet, 55lb billet wheel and 10cm hotside
GT-Spec Header/Up-pipe combo w/external wastegate
TiAL 44mm EWG
Supertrap silencer for the EWG dump tube
TurboXS down-pipe
Custom catless mid-pipe
Cobb muffler
Deatschwerks 950cc Injectors
Perrin Fuel Rails
Walbro 255lph Fuel Pump (totally maxed out and in need of an upgrade)
JDM TGV Deletes
Phenolic Spacers
Peterson breather can
Mishimoto racing radiator w/Mishimoto shroud & fans

Note that I run the STOCK cams and that the hydra's boost readings are much lower than most other map sensors. My AVC-R for example says that I am running a max of 29psi.
Can you post of a picture of:

Supertrap silencer for the EWG dump tube
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Old 08-22-2010, 06:14 PM   #260
RLR257
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Quote:
Originally Posted by blackdub06 View Post
What would the best turbo be for me to get to 450whp with the quickest spool on E85?

Hydra EMS
Wiseco Pistons 9.1:1 stock bore
Eagle Rods
ACL Bearings
ARP Head studs
Kelford 264 cams
Supertech valves and dual valve springs
TGV deletes
RC 1200 cc injectors
Perrin fuel rails
Aeromotive fpr
walbro 255 fp
samco turbo inlet ( will be changing to 3in inlet)
turbo xs fmic
theres people making 400 on pump with the dom3xtr and no where near the sweet spot of the turbo so i would think a dom4xtr (or definitely the dom5xtr) would get you there easily... but ive yet to see anyone do it on the dom4xtr.
If you go rotated, the pte6262 could probably get you there. i know a guy with one that put down 420 on low boost. At 18psi, he said his boost peaks at 4300rpm.

Last edited by RLR257; 08-23-2010 at 11:34 AM.
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Old 08-22-2010, 09:59 PM   #261
k mier
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With e85, it would be close, but with the right combination, everything just perfect and the right dyno, it could be done on a green sized turbo. I'm running an older sz49 with 7cm hot side, 434hp on dyno dynamics, first pull, with injectors @97%. Sure the 7cm hotside limits top end, but it sure makes on heck of a quick spooling torque monster. Surely the newer designed green could pull another sixteen or so hp. IMO, YMMV, yadda, yadda....
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Old 08-23-2010, 10:15 AM   #262
junebugfareast
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Quote:
Originally Posted by blackdub06 View Post
What would the best turbo be for me to get to 450whp with the quickest spool on E85?

Hydra EMS
Wiseco Pistons 9.1:1 stock bore
Eagle Rods
ACL Bearings
ARP Head studs
Kelford 264 cams
Supertech valves and dual valve springs
TGV deletes
RC 1200 cc injectors
Perrin fuel rails
Aeromotive fpr
walbro 255 fp
samco turbo inlet ( will be changing to 3in inlet)
turbo xs fmic
Just a data point -

With a EJ257, I've got the Dom4-xtr and same basic mix of components including Kelford 264's (but with Cosworth heads and 98 RON+50/50 meth/water instead of E85) and I am at 485 whp on Airboy at 7000 rpm/25 psi. Torque peak is at 4400 rpm. With a Dom3, I was at 435 whp.
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Old 08-23-2010, 01:13 PM   #263
Phatron
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^^ Post a log in the thread below to get on the list....that will put you at #3 most powerful in there....

http://forums.nasioc.com/forums/show...ight=road+dyno
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Old 09-17-2010, 07:35 AM   #264
hally
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How many more rpms of lag would one expect from the 4.0XTR over the 3.0XTR and how much extra power should be achieved from the same boost(setup/conditions being equal)?

Roughly what rpms would each turbo make 25psi(4th gear, short ratio 6mt) on a 2.5l with cosworth 278/274 cams and minimul porting(euro/au Sti head)?
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Old 09-17-2010, 07:08 PM   #265
hally
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Quote:
Originally Posted by hally View Post
How many more rpms of lag would one expect from the 4.0XTR over the 3.0XTR and how much extra power should be achieved from the same boost(setup/conditions being equal)?

Roughly what rpms would each turbo make 25psi(4th gear, short ratio 6mt) on a 2.5l with cosworth 278/274 cams and minimul porting(euro/au Sti head)?
Bump, anyone help?
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Old 09-17-2010, 07:27 PM   #266
Phatron
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300-500rpm of lag and the dom4 will make 30-50whp more
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Old 09-17-2010, 07:56 PM   #267
hally
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Quote:
Originally Posted by Phatron View Post
300-500rpm of lag and the dom4 will make 30-50whp more
Thanks for your help Phatron, roughly what rpm you seeing 20 and 25psi in 4th gear?

Do you think the dom 3xtr would be a worthwhile upgrade over my current aps sr55(360whp) or would the dom 4 xtr be a better choice to definately gain some?
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Old 09-17-2010, 07:57 PM   #268
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just taking a guess, but from what ive heard, the dom4xtr spools similarly (maybe 100-400rpm slower) to the dom3xtr, but makes more power. both would be over 400whp with that set up, but i would think the dom4xtr would put u in the neighborhood of 450whp, maybe more. 25psi is a lot though, with no meth.
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Old 09-17-2010, 08:26 PM   #269
hally
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Quote:
Originally Posted by RLR257 View Post
just taking a guess, but from what ive heard, the dom4xtr spools similarly (maybe 100-400rpm slower) to the dom3xtr, but makes more power. both would be over 400whp with that set up, but i would think the dom4xtr would put u in the neighborhood of 450whp, maybe more. 25psi is a lot though, with no meth.
Ok thanks. Any idea of what you'd see desired boost on the dom 4?

Most tunes we aim for 25/26psi and work back from there if it's doesn't like the boost or timing we just take it out until it's happy. Our pump fuel is 98ron, but i've been told it's similar to your 93ron anyway.
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Old 09-17-2010, 10:52 PM   #270
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There is absolutely no point in going from a SR55 to a dom3.....its not an upgrade...just a sideways move...both are 55 lb/min turbos

The dom4 is a 60 lb/min....dom5 is 65 lb/min

heres my dom4xtr....20psi @4200....25psi@4500....30psi@4800

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Old 09-18-2010, 12:41 AM   #271
hally
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Quote:
Originally Posted by Phatron View Post
There is absolutely no point in going from a SR55 to a dom3.....its not an upgrade...just a sideways move...both are 55 lb/min turbos

The dom4 is a 60 lb/min....dom5 is 65 lb/min

heres my dom4xtr....20psi @4200....25psi@4500....30psi@4800

How much does meth effect spoolup, is it like higher octane race fuel or just a measure to reduce the chance of detonation having little to no bearing on spoolup characteristics?
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Old 09-18-2010, 01:48 AM   #272
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doesnt really effect spoolup.....doesnt start spraying until 7-9 psi.....

meth is a way higher octane fuel....does prevent detonation......but doesnt really have an effect on spool
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Old 09-18-2010, 01:56 AM   #273
hally
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Originally Posted by Phatron View Post
doesnt really effect spoolup.....doesnt start spraying until 7-9 psi.....

meth is a way higher octane fuel....does prevent detonation......but doesnt really have an effect on spool
God i'm a dumb****, meth of course, methanol. Think i was getting mixed up with h20 or mist injection, that makes no difference to spool and just a det preventative.

When your meth is triggered, your spool graphs does climb faster(7-8psi), are you running more ignition advance than you normally would if it was soley pump fuel?
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Old 09-18-2010, 02:00 AM   #274
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yes, way more boost and timing......the timing is on the plot above.....15* at peak tq and 30 psi.....and thats cali 91 octane + meth.....although i am spraying a crapload of meth....two of aquamists 1mm (335cc) nozzles.
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Old 09-22-2010, 03:12 PM   #275
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Anyone have any experience with the new dom 2xtr?? Says on the site it flows 55lbs/min. Just curious on how spool up and full boost will be compaired to a dom 3xtr cuz they flow close to the same.
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