FAST injectors...pulse width?

[Mike Norris]

If the 83lb injectors will be right with the blower on it, then it will still have to idle and low speed cruise with them. Yes, they are way to big for it as an NA setup, but they still need to be dialed in and can be for sure.

What I would do is have the fuel pressure set lower (40-ish) and use a boost only referenced fuel pressure regulator to gain pressure as boost climbs.

We run 80-100lb injectors on quite a few cars these days on FI LS engines and they drive and idle quite well. All in the proper injector data, proper fuel pressure and proper tune.

Mike Norris

[INTMD8]

Originally Posted by Mike Norris

If the 83lb injectors will be right with the blower on it, then it will still have to idle and low speed cruise with them.

Exactly, the thing isn't going to have boost at idle once you install the blower.

If they will idle/cruise correctly with the supercharger than they will do so without the supercharger. It won't be a problem.

[J-440]

Ok, so the injectors will be fine at idle and maybe at a light cruise. I'm assuming the engine will bog down because of too much fuel no matter how much the pulse width is adjusted. That's fine with me because I really want to hear this baby fire. Was only concerned about the excessive fuel wash during break-in.

[camcojb]

Originally Posted by J-440

Ok, so the injectors will be fine at idle and maybe at a light cruise. I'm assuming the engine will bog down because of too much fuel no matter how much the pulse width is adjusted. That's fine with me because I really want to hear this baby fire. Was only concerned about the excessive fuel wash during break-in.

With the correct tuning it'll be fine at all rpm's.