Z1motorsports 400 hp package
 

Has anyone installed this setup, performance exhaust headers, 2.5" test pipes and modified upper intake manifolf?

I don't have THEIR package, but I have the motordyne M370, FI HFC's, FI Catback, and Stillen Gen 3's with an Uprev tune.


If that gives you anything close to 400 HP, I'll eat my hat. I've got all the NA breather mods AND a tune, and I'm at 320 RWHP.

I'm sorry, the short answer to your question is: No.

That is very helpful info. Thanks

I defer to GoFightNguyen because I know he is up to speed on all this stuff (think I saw his dyno posts). However, z1 must be claiming 400 at the crank right?

They are basing that number on engine HP, not wheel HP. Which seems both misleading and silly to me since it's unlikely that anyone will pull their motor and slap it on an engine dyno. So estimating about 15% drivetrain losses that's about 340 wheel hp. I don't have it so I can't say if it adds that much power or not. Our cars routinely dyno at 270-280 HP on a Dynojet. So this would add 60-70 HP. Hmm...

I'll classify that claim as "ambitious".

Are you looking for feedback on quality, easy of install, gains, etc?

The STILLEN Gen 3 Intake and STILLEN Exhaust that they say are needed for these gains get around 15-20 whp a piece, so I can see this being possible. We had a 370Z (6MT) with STILLEN Gen 2 intake (which makes a lot less power than the Gen 3), headers, test pipes, and STILLEN Exhaust in here a month ago for Dyno Tuning. We made 315 at the rear wheels so with the Gen 3 intake and modified manifold I can see 330 at the wheels being possible.

Yes the 400hp is at the flywheel and they claim 340hp at rear wheels. I am looking for user input that installing these 3 products can produce their claimed gains, again thanks for your answers.

There's one guy here who has it, I can't remember his name. He's new.

Again, not without the Gen 3 intake, a good Exhaust, and Tuning.

The guy named "numonik" has it

Yea and they only claiming those numbers on their dyno and it has to be a 6spd with a upgraded clutch and flywheel???? along with all other bolt ons. Someone blowing smoke somewhere??

Interesting,

This kit does seem very overly ambitious.

Not long ago someone from the 370z forum hit the 340whp on Z1 dyno by just adding the Momentum headers in addition to other typical mods for our VQs. Not sure what else was done it.

But If you look at the dyno sheet on their site with this power package, it says 340whp was hit with Z1 headers, their intake manifold modification and their own prototype intake.

I'm seriously doubting Z1 lately, me think that this was done to hype up their own headers and manifold products.

I understand the need to promote your product. I would feel a lot better if they stopped treating their customers like children. If Numonik is to be believed, they wouldn't tell him what they did to modify a stock intake manifold to get Motordyne-level boosts in hp. I don't need to know *exactly* what they do, but a very simple explanation would be good. There's little to no information on what they do, and I have a very simple attitude towards stuff like that:

If I don't know what it is, it doesn't go in my car.

Even if they're talking flywheel horsepower, calculated backwards, 340 rwhp is VERY ambitious in a NA VQ37VHR engine. Those test pipes don't even have a side bung to keep your O2 sensor out of the exhaust stream.

400whp is roughly where a stage 1 sc starts. Stillen and gtm stage 1 would put you in the 420 to 450whp range depending on supporting mods and strength of motor. You can also get much more out of it with belt changes. Z1 is starting to make me question their ethics.