Going from FI to NA..where to start?

[edge04]

I've switched my car from procharged and back to NA. I was running a 2 bar COS SD tune and going back to running a MAF.

Car is a 2006 corvette. And my NEW mods are:

E38
LS2 stock short block
GM LS3 ported heads
GM LS3 ported intake w/ stock TB. 280158051 injectors which I believe are 42 @ 58 psi (bought intake, rail and injectors off a 2010)
1 7/8 long tube headers w/ no cats
CAI w/ ls3/7 MAF
Cam specs: ADV DUR INT 279 EXH 297 DUR @ .050 INT 227 EXH 243 LOBE 114

Going to need a base tune so should I just load a stock tune from a 06 ls2 vette (I no longer have mine) or load a tune off a stock ls3 vette or other car (would it need to be a E38?) or go I different route? Just need a base tune to get it started and running so I can tune from there. If anyone has a tune I can use that would be great, willing to work something out. Thanks!

[Eaglegoat]

Why can't you start with your current tune?

[edge04]

Per original post. I am going from a MAF less 2 bar SD tune to MAF and 1 bar. Previous injectors were ID1000 etc. completly new set up.

Why can't you start with your current tune?

[SultanHassanMasTuning]

you can still run SD tune, infact it will be better it alot better than MAF

[edge04]

I know that I can but whether it is better is arguable. My plan now is to run the MAF

Fact is I can't run my old tune so just looking for a base tune and curious if starting with a stock ls3 tune with those injectors will get me started. I'm hoping that the stock tune will at least have all the right injector data. The cam is far more agrresive than stock so realize I will have adjustments to make due to that. Thanks

you can still run SD tune, infact it will be better it alot better than MAF

[Eaglegoat]

Copy/paste 105 kpa and below. Copy/paste timing.
Copy over new injector data.

[edge04]

I assume you mean from my original tune. How will that help? I have to assume that none of that data can be helpful as its a completely different engine. I understand I can do that as a starting point if I was staying SD but I have to think that would still require more work than starting with a stock tune that has MAF data and my injector data. Thanks

Copy/paste 105 kpa and below. Copy/paste timing.
Copy over new injector data.

[Eaglegoat]

Your original post made it seem as if you were just taking of the procharger.

[edge04]

changed original post in hopes of clarifying. thanks

[schpenxel]

You can run in SD while still recording MAF frequency vs. VE airflow and generate a MAF curve that way to get you started.

[edge04]

Based on my current mods which is really just a heads, cam, exhaust and CAI wouldn't I be better off starting with a base tune? Seems to me like starting with that vs my current tune (I can post) would be far easier....am I wrong?

You can run in SD while still recording MAF frequency vs. VE airflow and generate a MAF curve that way to get you started.

[edge04]

was doing some searching and found this thread. now I'm thinking of starting with a Z06 tune

http://www.hptuners.com/forum/showth...tor-Table-Help

[Eaglegoat]

Honestly you're gonna have to redo so much that it won't matter where you start.

[edge04]

was hoping that I can load a tune with my injector data.

Honestly you're gonna have to redo so much that it won't matter where you start.

[Eaglegoat]

was hoping that I can load a tune with my injector data.

I kinda thought that was assumed. Good luck.

[edge04]

helpful

I kinda thought that was assumed. Good luck.