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What should my next mod(s) be?

N

NSaturday

New member
04 COMP-G with a L26, instead L67/L32, and 2.93 geared tap-shift built trans.

Current mods are:
ZZP Z7 turbo kit (one of the originals converted to a v-band flange, new turbonetics turbo)
LT1 MAF
HV3
1.9 modded stock rockers; 105lb springs
42.5lb injectors
No cat
Auto lite 103s
Fuel pump rewire
Electric cutout
Powrtuner (not really a mod since I don't know how to tune)

I have a wideband gauge waiting to go in once it warms up along with a boost gauge and GXP front brakes. So now I'm back to speed.

I'm THINKING injectors (what's everyone run?) my 42.5lbers are EV1 with EV1 to EV6 adapters, and IIRC I'm very close to maxing them out.

I'm also thinking the front and rear log manifolds.

I REALLY wanna hit 400whp. So of course a retune with the boost turned up after those mods would be necessary.

Thoughts?
 


What turbo? Should be able to easily make 400 with what you have assuming you can supply enough fuel and have enough turbo. Upping boost may cause issues with your valve springs. Assuming your turbo is up to the task, injectors are probably needed to keep duty cycle under 80%, though I ran 42.5 green tops static for years with my m90 build around 375 rwhp. If it starts floating valves then springs.
 
SlowFiero said:
What turbo? Should be able to easily make 400 with what you have assuming you can supply enough fuel and have enough turbo. Upping boost may cause issues with your valve springs. Assuming your turbo is up to the task, injectors are probably needed to keep duty cycle under 80%, though I ran 42.5 green tops static for years with my m90 build around 375 rwhp. If it starts floating valves then springs.
Click to expand...

Honestly I don't know the specs on it, it was supposed to be comparable to the turbo that originally came on the Z7 turbo kits back when they first came out.

I believe ZZP said my injectors were pretty much maxed when they dyno tuned it. Wanna say 100%+ duty cycle. Something about being an 04+ return less and having more headroom though so they weren't worried since I was just pushing 9psi.
 
Yeah, 04+ are not boost referenced, so injectors would pretty much be required. Missed that in your original post.
 
Say I go with 80lb injectors, what do I need to do on the powrtuner to use them, just until I go and have it dyno tuned on higher boost?
 


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