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Old 10-02-2007, 10:00 AM   #1
SloRice
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701whp 9.91@146

Default 2004 STI, Axis Racing Longblock and 35R Initial Tuning

Well, we finally got some of the kinks worked out on my motor and (knock on wood) it seems to be running well.

I brought the car in on Saturday to work to do some tuning and we couldn’t really get it to make any power. It was only making about 430whp on my dyno (Mustang Dyno). But the biggest thing was I was going over the knock thresholds on the Hydra. Based on the tune, I just couldn’t believe I was actually knocking…Cam2 114 leaded race gas, 11:5:1 AFR and 12* at peak torque rising to 16* by redline.

Talked to Phil at Element Tuning on Monday and he smoothed out my fuel map and bumped up my knock corrections. Wow, right off the bat, the car made 420whp with AFR’s that were a little rich (11:1), but rock solid through the entire run. It was also really rich during spool up, so I leaned out the spool up and leaned out the in boost a little (11.5:1) to get the fuel map right. Then went ahead and started adding timing. I ended up making about 470whp and 430wtq at the same boost level as Saturday.

Now here’s where it gets really interesting…..I did that at 26psi tapering to 22psi by redline. That’s right….470whp at 22psi!!! And on the heartbreaking low reading Mustang Dyno….this is well over 500whp on a Dynojet for all the dyno queen guys. Last year, with just a set of pistons in the motor, I made 510whp at 32psi. So Ron’s head/cam package is really shining with the 35R.

Major problem we are having right now is we can’t make anymore boost. So I’m going to order the wastegate helper spring in order to bump the base pressure up to 20psi, so I can hopefully make over 30psi.

Mods:
Axis Racing Stage 3 Motor with Carrillo Rods and Wiseco pistons (8.9:1 compression)
Axis Racing P&P Heads
Supertech valvetrain and +1mm valves
Kelford 278/272 non-AVCS cams
Perrin header
Perrin GT35R kit
Buschur Racing Catback
TurboXS Intercooler with custom IC pipes
Reversed Intake Manifold
WRX TGV’s
Deatschwerks 1150cc injectors
Perrin top feed fuel rails
Buschur Racing Dual Walbro System
Hydra 2.5+
Buschur Racing Manual Boost Controller

I’m sure there is more, but I can’t remember.

Anyways, here’s the graph I downloaded off the computer. Ah, the quest for power has begun!!

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Last edited by SloRice; 10-03-2007 at 02:39 PM.
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Old 10-02-2007, 10:18 AM   #2
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Nice!!! When can I come up and use the dyno? (and get a ride!)
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Old 10-02-2007, 10:20 AM   #3
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nice smooth graph.....I'm assuming the motor is broken in or whatnot but what is the maximum rpm you could have taken it to? I believe 7000rpm is teasing that motor of yours lol
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Old 10-02-2007, 01:18 PM   #4
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nice.

that was still on cam2 114 leaded race gas?

how come no AVCS?
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Old 10-02-2007, 03:18 PM   #5
SloRice
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Quote:
Originally Posted by dmross View Post
Nice!!! When can I come up and use the dyno? (and get a ride!)
I'm lucky to get to use the dyno!! It's not permanent....it's just going through production...so it will get shipped out eventually.

Quote:
Originally Posted by F EVOZ View Post
nice smooth graph.....I'm assuming the motor is broken in or whatnot but what is the maximum rpm you could have taken it to? I believe 7000rpm is teasing that motor of yours lol
I have about 1300 miles on the engine. Ron @ Axis says the motor is capable of going to 8500RPM. With the head/cam/turbo package I'm running, he said it should make peak power in the 7500-7700RPM range. But if you look at the graph, its making peak power at 6000RPM. So no point running it out to 7500-8000RPM until we get the boost taper situation fixed.

Quote:
Originally Posted by stickman View Post
nice.

that was still on cam2 114 leaded race gas?

how come no AVCS?
Correct....Cam2 114 leaded race gas.

With non-AVCS cams, you get the ability to run a higher lift cam because the fear of putting the valves into the pistons with the AVCS isn't there anymore. Higher lift means more airflow, which means more power.



I'm going to try a different boost controller today after work to see if that allows me to make more boost. I also have a 20psi base spring on order for the wastegate...should be here Thursday.
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Old 10-02-2007, 04:08 PM   #6
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do you have adjustable cam gears? if so, I'd retard that exhaust cam gear a bit...
pretty good amount of power though
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Old 10-02-2007, 04:36 PM   #7
burnin4
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those are good number! very similiar to my Axis longblock, 18psi/93octane 471/400. 1/2 tank of 93 + 5 gallons of c16 = 545/488. <--- good enough to run 11.27@128mph (last week).
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Old 10-02-2007, 04:53 PM   #8
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Great job with this car, id be very happy with those results as Im sure you are! Goodluck with the rest of the tuning, that is s sick graph up there^
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Old 10-02-2007, 04:57 PM   #9
Junior2JZ
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Nice numbers Tim. Get that boost holding up top and thats going to be one wild ride.

Junior
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Old 10-02-2007, 05:26 PM   #10
SloRice
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Thanks guys...well, off to see if the new boost controller does anything. Wish me luck!

Wild ride?? Oh yea!!....I have the 2007 3rd and 4th gears in my tranny...no shifting to 5th for me!!
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Old 10-02-2007, 05:29 PM   #11
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Very cool. I'm really curious to see what happens once you get the boost figured out.
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Old 10-02-2007, 05:37 PM   #12
MJU1983
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Nice man!

People just don't realize the benefits of ported heads, cam/valve train package to make their engine (air pump) a better flowing one. It makes a HUGE difference when you can run much less boost more efficiently to make more power than before with higher boost pressure.

And I can vouch for the Mustang Dyno being a low reader, god is it ever!
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Old 10-02-2007, 08:09 PM   #13
SloRice
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No dice on the new manual boost controller.

20 psi base spring comes in Thursday. We'll try that next and see if that helps get the boost up.
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Old 10-03-2007, 09:26 AM   #14
SloRice
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I may also buy a GM boost solenoid and hook it up to the Hydra. Talking with Tim Bailey, he has some good base maps for the boost tables in the Hydra and says it works really well.

So if the MBC doesn't work so well, I'm trying that next.
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Old 10-03-2007, 12:02 PM   #15
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what kind of knock voltage were you getting when it was knocking?
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Old 10-03-2007, 12:11 PM   #16
SloRice
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My original knock threshold map peaked out about .6 volts. Phil bumped them up to a max of .8 volts. The general noise of the car is right in the .55-.7 volts, so I'm probably going to bump the new threshold map down to .75 volts.
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Old 10-03-2007, 01:35 PM   #17
WebMasterP
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What exhaust headers and what's the size hotside did you get on the 35R?
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Old 10-03-2007, 01:40 PM   #18
SloRice
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The info is all up in the original post...but....Perrin header, Perrin 35R .82ar turbo kit and Buschur Racing catback.
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Old 10-03-2007, 01:52 PM   #19
modaddict
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nice Tim!!!!!!!!!!!!!!!!!!!
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Old 10-03-2007, 02:06 PM   #20
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Quote:
Originally Posted by SloRice View Post
The info is all up in the original post...but....Perrin header, Perrin 35R .82ar turbo kit and Buschur Racing catback.
Ahh, I didn't know the extent of the Perrin kit (didn't know it came with the headers). Thanks and sorry.
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Old 10-03-2007, 02:39 PM   #21
SloRice
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opps...sorry. I thought I posted Perrin headers in the mod list in the first post....i'll edit it and add them in.
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Old 10-03-2007, 04:56 PM   #22
aps2fast4u
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very nice!!

Good to see things coming together for ya!
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Old 10-03-2007, 05:07 PM   #23
D Money
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what are you reving the block to? 8500 as suggested through Ron? How is the oil pressure up top in the rpms? Does it drop at all?

When do you see full boost by with the cams?

Couple questions, sorry! I just wanted to know since I am going to run the identical setup, just with the full-race twin scroll GT3582R with twin wastegate design, rc1000s, and aeromotive external pump...

Very impressive numbers, im getting soo excited! Can't wait for mine to be finnally finished! The only thing is, how do you not plan on shiftin into 5th even with the 07 gears. They generally top out at 117-119, if you rev to 8500 maybe you can get an extra 10mph out of it, but that's going to be cutting it close. I bet you trap 125-129 depending on what fuel you got in the tank.
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Old 10-03-2007, 06:57 PM   #24
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what's causing the choke at high rpms? cams or smaller than ideal turbine/housing? i would think the cams should make power until 8K atleast. what are the specs on the GT35?
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Old 10-03-2007, 08:18 PM   #25
SloRice
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D Money - I am currently only revving it to 7000RPM. As you can see, power is on the way down after 6000RPM so no point revving it higher. I'm fighting a boost taper issue and that's why it's not making big power right now. 20psi wastegate spring is coming tomorrow and hopefully that will allow me to make and hold more boost.

The graph isn't real indicative of the boost. I am making 20psi by 4300RPM and 26psi by 4600RPM. After talking with Phil, I just need to add a little more timing in from 4000RPM to 5000RPM and that will bring the torque up in that area and not make the graph look so laggy.

From 3000RPM to 7000RPM, oil pressure is rock solid at 5 bar.

As for the gearing...yea, it tops out at 118MPH....at 7000RPM. Rev it to 8500 and you are at 140+MPH.

MRF582 - at this point, there isn't anything choking the setup that I can see. The biggest issue is not holding boost....which means the engine is flowing very well.....or at least flowing better than the turbo and it can't keep up. Thats why we are switching out the wastegate spring from a 14psi spring to a 20psi spring. The setup will make peak power around 7500RPM. Once we get the boost issue ironed out, we'll figure out what the next piece of the puzzle choking the system is. It's a standard GT3582R.
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