Wrx Wagon Just Got Retuned!
 

Just wanted to show you all my new numbers after my retune.
its a 2007 wrx wagon with 6spd sti swap(SEAN I FINALLY DID IT!) and stock sti turbo with other mods.
Mods Before Retune
Vf43sti turbo w/ 08 sti Top mount
Full Turboback
Walbro255lph
TUNE=283whp/335tq

Mods ADDED FOR RETUNE
Turbo inlet hose w/ AEM CAI
BCS
NGK PLUGS 1 step colder.
TUNE with all the mods listed = 305whp/356tq and 335whp/372tq on 95 octane mix :)

This retune consisted of just a Turbo Inlet Hose and AEM Cold Air Intake and 1 step colder plugs.

My previous tune pulled 283whp/335Tq without inlet hose and intake.

here is my new retune! let me know what yall think!!! :drink:



This show my 91 Pump #'s as well as my 95 octane Tune!

Is that fall off in torque a function of the stock turbo? It's hurting your peak power quite a lot. You're making slightly more peak torque at lower revs than my H&C LSx makes, but considerably less peak HP, just because of the torque curve. :huh:

Yes our cars have good low end torque, AWD = lots of drivetrain loss.
but your car doesnt rev up to 7k i see.
All cars are different?

if you see my pump 91 octane run, the torque dies off, but my HP holds a good 300whp up to redline.


its a possibility the turbo doesnt act the way NA motors do, Because the torque drop you see is nowhere near noticeable, just likes to keep pulling.

Here is a dyno chart on a GT65 TURBO UPGRADED e85 BEAST Pushing 507whp and butt loads of torque.



as you can see the torque dies off on turbo upgraded cars also. The HP goes up, thats what matters in the end.


200whp/300tq against 300whp/200tq....which one would win????

Subarus have plenty of drivetrain loss, About 20% of loss.

305whp assuming i have 25% drivetrain loss would come out to 381 to the crank.
507whp assuming he has 25% drivetrain loss would come out to 633 to the crank.

That's what I mean. Without sounding like a complete a$$hole, I've raced many STis and Evos at the track. The pull hard out of the hole then I walk right on by. Simply my engine continues to do more work (HP) where these motors flatten out fast. I'm talking about stock or moderately modded ones up to about your level. Beasts are beasts, different story.


Exactly. The HP would go up a lot more if the torque were more stable. This is a big part of the design in a turbo car, depending on application, where it will spend most of it's time (rev vs. boost), etc.

My point is that I think your car may have a slight breathing problem for the torque to fall off quite that rapidly. Probably a turbo size/effeciency issue. I've seen similar things on stock GX-P turbo pulls. But I've also seen turbos that go to high torque and stay there, which means a more linear HP curve up to red line.

Let me ping our resident turbo guru.

Congrats - you finally did it :bigthumbsup:

305/356 is stout for 91 octane :judge:

How hard was the tranny swap?

Thanks Sean!
replying to the post above me, i am probably having breathing problems, lack of turbo size and my itty bitty 2.5 magnaflow axelback which is restricting free flow.


the 6 speed swap went smoothly, better than i expected.

all the 6spd parts, plus some new seals, new tranny oil, and waaalaah!
my axles mate up perfectly!

let me know when your next drag event is, iam very interested.

Thanks Sean!
replying to the post above me, i am probably having breathing problems, lack of turbo size and my itty bitty 2.5 magnaflow axelback which is restricting free flow.


the 6 speed swap went smoothly, better than i expected.

all the 6spd parts, plus some new seals, new tranny oil, and waaalaah!
my axles mate up perfectly!

let me know when your next drag event is, iam very interested.

Also, did you happen to see the e85 gt65 subaru torque curves?
I can show you a Evo chart or Subaru chart and the tq curves drop.
2 liter turbo cars? possibly the reason why.

Here below is a evoX with some mods, protuned. stock turbo.
Torque drops, but HP CLIMBS! boost drops, but the power climbs! .......................




id probably run a freakin 14 sec since ive never been to the drag strip :)

good idea.

Its because the Subaru has crappy heads and the STi turbo is still to dinky:laugh:

My tuners comments about this discussion

The reason TQ drops is 2 fold. 1-Boost drops. If you look at the dyno chart, boost and tq follow the same trend. 2-The subaru heads cannot flow for crap over 5500 due to the design of the ports. Evo on the other hand has better flow and with a turbo that can make flat boost to redline. It will hold TQ, but a V8 typically cant rev over 6-6500 where and evo can go to 9k+ and so can subies. Not to mention its HALF the displacement/Motor.

dyno graph comparing the Wagon to a v8

Well, the stock LS7 is 7k, lots of track V8s go to 8k and believe it or not NASCAR motors are built for continuous duty at 9-10k. When you say the evo "can go to 9k+", is that in a typical form, or easily done? What's the stock redline range on these Turbo 4s?

My Evo rev limiter stock is 7600k its no problem taking it up to there but untuned its not really needed, now tuned I can go to 8100k which I see frequently:bigthumbsup:
subies usually do not go past 7-7200k, unless built for it

When do the EvoX heads stop breathing? Do they respond well to mild porting, or are they really pretty much a done deal stock?

They flow really really good. Don't have exact specs, have not really heard of people doing much porting yet. Car still to new, We are just starting to get some nice turbo upgrade options now:nuts:

jdm subaru motors run up to 8500 redline stock also.


we just get it bad in the u.s

8500rpm's stock? Sounds like a Ferrari :thumbs_up:

Nice number have a question for you though...Have I raced you?

cool beans just what i would expect outta that set up. :thumbs_up:

ummm...im not sure, what kind of car do you have?

He has a FWD Turbo Impala. I think it's a 2003 but I could be wrong.

2001 impala with a turbo I raced a wrx wagon in brea before just wondering if its you...They guy I raced has come out to one of our meets before.

nope, wasnt me :)

Well! did you win? :sm_laughing:

If I remember correctly I was ahead. But he had to turn so it wasn't anything big more of a short speed burst.

someone PM me this weekend if they wanna go do some 1/4 runs.


im really interested to see what the wagon can pull out.

I have a meet every sat...a street meet. pm me if your interested.

Is your car up and running yet? I'd love to see it when I get home Sunday if so.

It's running can't keep driving it without a catch can but I'm tuning just got back from doing some scans. Looking okay so far.

Excellent :bigthumbsup:

Concur, there is an intake restriction somewhere. Maybe you just need to turbo up. STI's have that turbulencevalve/resitictor that is often removed.

They are quick off the line because the owners rape their drivetrains not because of low end torque.

Ben when did you go with the heads and cam?

The engine he bought already had it done. I believe they are 4.8L truck heads that are milled and a smog legal 114lsa cam, but I could be wrong :huh:

You are correct sir. It's how I bought it:
Heads Milled & Ported (heavily), estimated 11:1 CR (methinks could be a bit higher)
CAM = 224/224 114LSA

390WHP on mild pump gas tune. Headers and 93-95 octane tune should put me well into the 400s :huh:

intake restriction is freed up, i have turbo inlet pipe to my cold air intake. and YES, bigger turbo would be better than STOCK of course. STi's do TGV deletes and the flow is optimized. We are quick off the line PERIOD...doesnt matter if we rape our drivetrains or not. Why do you think the rally cars have 300whp but 500tq????

FAQ.

STI 6 speed TRANSMISSIONS = NEARLY BULLETPROOF.
WRX 5 Speed = if modded, worry...

WRXwagon, not trying to spin you up, but the REAL ralley cars make 500ftlbs with only 300hp because they have an intake restrictor that is mandated.
HP= torque X RPM / 5250.

STIs have super long intake runners which while increase low end torque will cause flow restrictions up top, the same can be said about the baby turbo.

Bulletproof or being quick off the line are both matters of opionion and relative. STI based on my expierences and observations are niether:drink:.

You speak truth to power. However, to my knowledge, there is a HUGE difference in how tough the JDM trans vs. USDM so maybe that's what he means. :huh:

hahah are you serious??? its all in the tune, we do not have only 300whp and 500Tq because of mechanical reasons on the RALLY cars, RALLY cars are tuned accordingly using certain mechanics and mods that arent on roadrace cars, add/pull timing, etc etc. your intake restrictor makes no sense if your talking about subarus in general. Rally cars maybe. NOW, if you read the other posts, our subarus have restrictive HEADS which hurts our cars, YES. my intake to turbo inlet to turbo is as free flowing as it gets with a intake. ALSO our cars have MAF sensor on our intake to read the air flow. Our cars can take in air as much as we want, its called tuner/tuning.............AFR?? more fuel, less air. less air, more fuel. etc etc...

not to burst your bubble, your statement above is totally incorrect, what is the point in having a "rally" car having 500whp in a back canyon dirt road where you cant even open up all that hp?????? As a rally cars tq is needed to pull out of those sharp turns and whatnot, you do not speak of the truth. Intake Restriction???? explain alittle more cause im totally confused. Intake to Turbo Inlet to Turbo.



JDM STI TRANNY OR USDM STI TRANNY OR NOT.

Being bullet proof or being fast off the line is not an opinion, its a fact my friend:laugh:

Obviously you have no knowledge in the history of STI 6 speeds. and what it can and cant do.

Thats why so many people on NASIOC, IWSTI, CLUBWRX forums consider PPG gears and STi 6 speed transmissions to be upgrades for people who run 400tq or more :). Thats why they have fully prepped Roadrace cars with STOCK 6 speeds...

if you had experiences where the 6 speed has failed, the DRIVER DEFINITELY FAILED, not the tranny.

I don't know about BADDASS's personal experience, BUT:

Don't know what current (last year's) rally rules are but they have had to run various intake restrictors (34mm - 40mm) for years. The express purpose is limiting power. Same as restrictor plates on NASCAR, rev limits on F1, etc.

Don't know about your trans, but I have a friend at work who had a moderately built STi. He broke a couple transmissions. What years are you referring to as bullet proof? Maybe there was a design change at some point in recent history. :huh:

As far as the engineering of engine building, right down to the physics of combustion, thermal efficiencies, etc., I don't think there's anyone here that knows more than BADDASS.

^ i don't disagree at all. im sure he is filled with knowledge and im open to being taught some lesson :)

As far as the STi Trans.

Nearly Bulletproof was my statement. Indeed transmissions can go, but from the history and beatdown that these trannys have had on roadrace to rally to any other events, these trannys do no give out.

Even after LC and FFS on drag strips, time after time, these trannys do not go...Axles break before tranny.


5 speeds have nothing to do with the sti tranny. 5 speeds are anti torque, and will have a tendency to break a gear with the right amount of tq.

Ok now we're getting somewhere.

5 speed vs. 6 speed

You're saying 6 speed is the much tougher one. I'm assuming you mean 6 speed manual.

- This is a Subie trans right?
- From when was it stock (i.e., when did it replace the 5 speed).
- What are PPG gears? Are they stock or aftermarket gears that go into the Subie trans?

I'm pretty sure my colleagues trans that he broke a couple times was a 5 speed, but I'm not sure. It was a few years ago.