fast way to 400hp

Post by **tyler g** » Tue Mar 02, 2010 1:29 pm

so i just bought a 90 2+2 n/a but im in the middle of a TT swap once i have everything running fine i wanna upgrade to about 400hp and was wondering whats the easiest way to get it up there

Post by **car nut** » Tue Mar 02, 2010 1:39 pm

You can get pretty close with intake/exhaust and a good tune (assuming you're talking about whp).

Post by **tyler g** » Tue Mar 02, 2010 1:42 pm

ya i just finished my buddies rb25 s14 swap so im looking to blow his doors off. but thats all i have to do is cold air and exhaust i though it would take a bit more

Post by **car nut** » Tue Mar 02, 2010 1:56 pm

car nut wrote:and a good tune

You'll need a reflashed ECU pushing around 15lbs and either boost jets or a boost controller.

Post by **BigTDogg (MA)** » Tue Mar 02, 2010 2:28 pm

car nut wrote:You can get pretty close with intake/exhaust and a good tune (assuming you're talking about whp).

False.

You'll get close with intake/exhaust and a good tune to 400BHP (brake horsepower), at the flywheel.

400RWHP requires significantly more.

Post by **Pieceofsand** » Tue Mar 02, 2010 3:44 pm

what are the difference between rwhp, bhp and just hp? thanks.

Post by **car nut** » Tue Mar 02, 2010 4:45 pm

BigTDogg (MA) wrote:
False.

You'll get close with intake/exhaust and a good tune to 400BHP (brake horsepower), at the flywheel.

400RWHP requires significantly more.

Really? Z32_TwinZ got 378whp with all that plus an aluminum driveshaft at 14lbs.

Pieceofsand wrote:what are the difference between rwhp, bhp and just hp? thanks.

RWHP = Rear Wheel Horsepower - horsepower measured at the wheels on a chassis dyno.

BHP = Brake Horsepower - I think an engine brake is a device used to place a load on an engine (like a flywheel).

HP = Horsepower - generally measured at the crank when on an engine dyno; usually around 15%-20% higher than wheel horsepower due to parasitic loss.

Post by **ImmortalZ** » Tue Mar 02, 2010 5:25 pm

hey man i just got an intake and z1 down pipe and hks exhaust with ash spec ecu tune and i think that should put u at 340whp at 14psi with some good fuel in there and trust its fast man u donnt need 400whp thats too quick u would need injectors and bigger turbos for that correct if im wrong guys

Post by **zxFarside** » Tue Mar 02, 2010 5:59 pm

LS1 swap then supercharge it

Post by **BigTDogg (MA)** » Tue Mar 02, 2010 6:40 pm

car nut wrote:Really? Z32_TwinZ got 378whp with all that plus an aluminum driveshaft at 14lbs.

I would double check that mod list, because I can say from experience, and from what I've seen, there's no way he's making 378whp on only an intake, exhaust and EPROM upgrade at 14 PSI of boost. To do that you'd need test pipes, down pipes and upgraded intercoolers.

There was a member on a different forum years ago who made "410.1 rwhp/ 460.8 rwtq - way advanced timing and lots of boost on race fuel" with stock turbos and injectors, but still had upgraded intercoolers, testpipes, SAFC, crank pulley etc etc.

To get 400RWHP for more than a dyno run, it takes a good amount of work with a stock turboed car.

Post by **car nut** » Wed Mar 03, 2010 4:38 am

Z32 TwinZ wrote:So i finally got the car on the dyno and was really impressed.

Just a reminder, im still running stock turbos and stock smic's at 14lbs.

Max whp - 372Max Torque - 381

Next upgrades will be pulleys, wideband, and ash smic's. we will tune it out and jump into the 400whp range.

Modified by Z32 TwinZ at 6:05 PM 11/23/2009

Z32 TwinZ wrote:Performance: downpipes back (SpecialtyZ), intake, clutch, aluminum driveshaft, nistune chipped ecu, boost jets 14lbs.

Post by **BigTDogg (MA)** » Wed Mar 03, 2010 4:51 am

Z32 TwinZ » wrote:Performance: downpipes back (SpecialtyZ), intake, clutch, aluminum driveshaft, nistune chipped ecu, boost jets 14lbs.

Right, so he has downpipes and test pipes in addition to the intake and cat back. Didn't mention what his timing was either. Nistune is also a lot more than a typical EPROM.

That's a strong car, and he did dyno 378whp, but still 22whp short of 400

So my statement still stands, a TT Z32 will not produce 400rwhp with an intake, exhaust and ECU.

Post by **tmeyer29** » Wed Mar 03, 2010 5:04 am

We should have a forum..."Question? just ask Car Nut"

Post by **car nut** » Wed Mar 03, 2010 5:04 am

Lol dude I'm not trying to start an argument but I said exhaust not cat-back and I said you could get pretty close not actually there. I should've been more specific with the exhaust but I meant a full exhaust from the turbos out, not just from the cats onward.

Post by **tmeyer29** » Wed Mar 03, 2010 5:05 am

378 is out of the ordinary, most TT's will be quite short of that.

Post by **BigTDogg (MA)** » Wed Mar 03, 2010 5:33 am

car nut wrote:Lol dude I'm not trying to start an argument but I said exhaust not cat-back and I said you could get pretty close not actually there. I should've been more specific with the exhaust but I meant a full exhaust from the turbos out, not just from the cats onward.

I'm not starting an argument either, just clarifying what you said. As tmeyer29, 378whp for a Z with those mods is definitely an anomaly, and should not be expected.

And BTW, I'm sure 90% of the members will assume cat-back when you simply say "exhaust" as a mod. Turbo back exhaust would have been more helpful.

Post by **ImmortalZ** » Wed Mar 03, 2010 9:49 am

your right man there is no way to get that much on a stage III z usually on a z with intake exhaust and the ecu upgrade gets you about 340whp if that unless u get bigger injectors and a duel intake and SMIC then youl push about 400whp

Post by **Pieceofsand** » Sat Mar 06, 2010 6:42 am

what is the difference between stage I stage II and stage III on a car, I've never figured that one out Thanks.

Post by **BigTDogg (MA)** » Sat Mar 06, 2010 7:21 am

Pieceofsand wrote:what is the difference between stage I stage II and stage III on a car, I've never figured that one out Thanks.

Stage 1: POP Charger (intake)

Stage 2: Cat-back exhaust system

Stage 3: EPROM (ECU) reprogram and boost jets to 14psi

After that it's all subjective and crap. Those are the only real defined stages.

fast way to 400hp

fast way to 400hp

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