I ran a buddy of mines wrx the other day and those bad boys with the right stuff are pretty damn quick. Hes got full apexi turboback exhaust (hks downpipe, catback, no cats), header (this made a huge difference), apexi intake, bigger 525cc injectors, front mount intercooler, and an expensive *** aem EMS system which lets him boost at 18lbs, 4 over stock. Well before he got his tune we ran three times. once from a 30, which was dead even, once from a 50, again dead even, and once from a stop, he pulled a car out of the hole and held it to a half car at 125 were he has to stop. those new boosted cars are quick, now im getting some suspension work done to see how well we run now that his cars tuned and once my suspensions done. By the way hes only putting out 234hp to the wheels and something liek 260tq.

 

That's a ton of cash & mods for only 234 whp. He may be using the stock turbo but damn - that's several grand spent to run what might be 13.20-13.50s? I hope all that prep was just leading up to swapping the turbo 'cause right now it's not doing him any good.

 

Hmm interesting. Would expect him to destroy you by way way more from a stop unless you are on drag tires like at least nittos or forgot to mention that. A wrx should easily get sub 2.0 60ft times and you should have a hard time getting sub 2.0 unless on proper race type tires. So first have to think the guy can't drive and isn't taking the revs up high enough. Also if he has aem he should have stutterbox or two step so can launch and build boost much higher at the line. Maybe he don't know how to use it.

I think the stock turbos are pretty limited and most turbo guys on wrx,dsms and srt 4s usually to make big power up the turbo. Power is almost unlimited with a big turbo swap and he has done some necessary mods like his exhaust engine management ,intake system to get him ready but those 525 are tiny for any decent size turbo and likely holding him back.I got 950 CC injectors to run big turbo in my 97 turbo awd talon with planning big turbo. Shooting for over 600 engine hp.A big fuel pump is usually necessary too and likley bigger intercooler or alco injection.Gas is important too..if he wasn't running high enough grade,had bad tune,too much timing was too lean etc.

Also do you have headers on your car would think your car would run a high to mid 12 with head work,cam and headers that stall and gears. Local wrx think with fairly mild mods runs around 13.4 supposedly and think 2.0 or sub 2.0 60ft.
Buddies ls1 cars with bolt ons and mabye some headers run around the same with higher 60fts and likley could get low 13 to high 12 with proper tires but most six speed guys are afraid of breaking the crappy rear end so don't push the 60ft too hard.
Our track is at 1700 feet and na cars lose some to altitude.Think forced air or nitrous cars lose some too just not as much.

If you don't have headers likely your car will pick up a lot with some.
And if he ups the turbo you will likely need some spray just to keep up although a good heads,cam/header combo should put out 450 engine hp or so even on an auto I think. See all these 400 rwhp numbers on six speed lt1s not sure what most autos are doing.360 to 380 rwhp maybe? Guess fine out next year when buy some long tubes and heads for my 96z. Already have comp 305 and 1.6 pro mags and all the little bolt ons. Have 3.42 gears and 2800 vig. Best time on my car pre vig was 14.3 at 3800 something race weight not exactly light car and with only a spinning 2.18 on my nittos with horrible track conditions that day and wasn't heating the tires up that day either. Was mostly racing slow as slug imports and didn't see the need to waste the rubber. Ran a turbo nitroused civic that managed 16.5 on his street tires. Ran a desol that managed 17.0 and a 5.0 slow vert that managed a 16.0. Not much competition for my 14.3s.
Hoping to get booted pretty quick next season at 13.5 and have a zex wet kit to guarantee that!

 

not sure if that year wrx has the 2L, but if it does there is a good chance when he reaches the 300 whp mark the thing is going to blow up... the stock 2L has a very weak block design unless reworked... they cyl. walls are very thin...

nice kill er, non kill... nice race

 

Didn't realize the subaru engine was a weak link.My dsm engines especially the 6 bolt versions can take like 450 engine hp no problems. Buddy with older subaru 1986 xt has gone thru two motors not sure what went wrong in his.

I am builing a 2.4 engine out of hyundai sonata ,its mits motor and have crower rods,wiseco forged pistons,arp main and head studs,crower valve springs and titanium retainers,manley valves and hks cams going in that motor. Should be capable of handling over 600 engine hp no problem.
Of course also have to have fuel support ,adjustable pressure regulator,supra twin turbo pump is basically drop in and 950 cc injectors and of course a way to tune it all. Combine with a good intercooler ,good exhuast,good clutch and a big garrette like a GT35R or similar and you have big power potential.

Be interesting to see if my talon turns out to be my fastest car. Well it likely to be at least until the 99 gets the turbo on it..

 

Yes i have headers, intake full exhaust,underdrive pulley, all the bolt on's. But i think i need a tune or something because compared to these other lt1's my car seems to lag.

 

I'm not sure why you're under the impression the 2.0L EJ20 is a weak block. I'd say its pretty foolish to run the stock turbo at 18 psi, even with those supporting mods, because it's well out of its efficiency range. The stock TD04 maxes at 13.5 psi. Also, running that front mounted intercooler with the small turbo will usually just give you more lag instead of HP. Now if he's planning to upgrade to a bigger turbo, it's good that he's done all the other mods first. Usually, you'd need a bigger fuel pump as well. With a good tune, and a larger turbo he should be putting atleast 275ish hp down to the wheels. I agree it is a lot of $ to achieve that though. With a good launch, slipping the clutch at about 5500rpm, he should be able to cut 1.7ish 60ft with probably a 12.9x-13.1x ET. The block can handle the power, as long as the turbo is spooling w/in its efficiency range and its being cooled properly. The 5spd transmission is the wrx's weakness. If your friend is a good driver, i'm surprised he's not putting more car lengths on you early.

 

With 234 rwhp(about the same as a stock STi), he's MAYBE hitting 103 in the traps, and you should be WELL above that if you have heads/cam/ and bolt ons.

Do you have all the mods in your sig? If you do, you should be smoking him from a roll. Something is wrong with your car.

Dan

 

its not tuned? and i have all the mods in my sig. so i dont know whats wrong with it!!!!!!!!!! ahhhhhhhhhhhhhh

 

i called the shop to ask what was wrong with. the reason was after i blew my first motor he took out the isky cam and put the stock back in. So for the last who knows how long i've been driving a car with bolt ons and corvette heads. So now i know why my cars so slow. I have the isky cam sitting in my garage and didnt even know it.Pretty sad huh. But it makes me a lot more happy to know that with bolt ons i can hang with such a supd up wrx.

 

I found the old isky box with the part number and it is lt1 271265, i looked it up on there site and it has the specs of:valve lift int. ex. .530 .550 valve lash hot int. ex. .000 .000 adv duration int. ex. 265° 275° .050 duration int. ex. 220° 230° lobe center 113°
i have no idea what this means, could you guys help me out here, and maybe put me in the ball park range of whp when i get this back in. thanks guys

 

Wanna see how the 06 wrx performs....engine is bumped up from a 2.0 to a 2.5...Only a 3 hp gain but 18 more ft pds of torque. Supposedly the extra cubes takes care of the previous wrx's low end grunt problem.

 

That's a nice cam, a little bigger than the hotcam, and very similar to the Comp Cams CC305. Very good street cam. Put that bad boy in there, get it tuned, and you'll blow past your friend so fast he won't know what happened.

Just for your reference, the corvettes had virtually identical engines to ours, so if the heads are stock unported corvette heads, then they are the same as the stock Z28 heads. You should check to see if the heads are ported for sure.

Sounds like, at this point, you have a full bolt on Z28, and you should have very similar trap speeds to the WRX with those mods since you are an A4. If you were a M6, you might trap a couple of MPH higher, and you would take him from a roll easier.

Dan

 

Is it the STi block and heads? If so, that will be a nice improvement for the base WRX. Did they keep a small turbo on it? I wonder why the HP only went up so little, could it be the new SAE HP rating system?

I helped a previous friend do a lot of work on his WRX, and low end TQ was a big problem for me. The power mods he did (up pipe, turbo back exhaust, cobb tuning, intake pipe) did help lower the rpms at which the turbo kicked in, but it still was up around 3000 rpm, and it felt like a stock Z28 as far as how it pulled. We got in a big arguement about imports and domestics, and have never spoken since. Silly huh.

Dan

 

Not sure if its the sti block...dont know much about them, I have liked them since they came out in 01 though...it just happen to be in this months MT ( I bought it for the New z06 road test on the cover ). Its only a 3 hp bump in power up to 230 hp but they say the low end torque is the big improvement. The front fascia was resigned along w/ 17 inch wheels and red brake calipers. Should be payin my car off in the next year or so it very well might be a possibility for me.