D_Rob

I'm installing my intake, header, and exhaust and I was wondering if there is enough room in the stock injectors to tune for these mods.

On one hand, people say "stock IDC is %(insert some high number here)" and on the other hand people say "You don't need injectors unless you're running a smaller pulley".

Let's sort it out. I plan on riding like this for at least 3 months before I move on to pulleys and such so I'd like it to be doing the right thing for that amount of time.

Thanks.

Rodimus_Prime

iTrader: (3)

You can tune for those things, I'd recommend keeping the redline at 6500 just so your not letting the duty cycle get too high, stock at 7000rpm I was seeing like 137%

Its my opinion that the car should have come from the factory with 42s on it, the stock injectors are grossely undersized for the application

ebristol

iTrader: (4)

Right on brother.

Stock Injectors Stock Pulley Stock Tune and all the bolt-ons - Saturn ION RedLine Forums

D_Rob

Thanks man. I didn't want to waste a dyno trip just to find out I was maxed out.

Thanks man. It was one of your posts where I saw that crazy high IDC on stock injectors. I'll check out the link.

D_Rob

Biggity bump for clarification. I see where the opinion is that there is enough room to tune in the stock injectors. But in theory, the GM Stage 1 kit is nothing but 42lb injectors and a tune. So I guess I'm just wondering if there is room in the stock injectors for a tune for intake header and exhaust, why 42lb injectors for a stage 1?

Rodimus_Prime

iTrader: (3)

They did 42lb injectors for stage 1 because its clear that the stock injectors couldn't do the job well enough