BOTTLE ROCKET

iTrader: (4)

Posting this in fuel and SC section since it involves blower
What injectors would I need for a H/C A4 C5 with all the bolt ons making 414rwhp (with TC unlocked) if I add a P1SC-1 at 6psi (hopefully 550rwhp)

ninetres

iTrader: (35)

60lbers

Slowhawk

iTrader: (12)

I agree. 60's

BOTTLE ROCKET

iTrader: (4)

Wow; I would have thought 50s at the most
(I don't have any experience to base that on, I just didn't expect it to need 60s)

ninetres

iTrader: (35)

You would likely be at or near MAX on some 42lbers, and 60's are the most common next step. Its not like you can find some 50lbers for wayyyy cheaper. Plus fuel is the first area you WANT to have some breathing room in.

calongo_SS

iTrader: (7)

60's are the way to go for pretty much any of FI build on a LSX.

ls1290

iTrader: (20)

I also agree with 60lb injectors. 42lb injectors would handle 550 NA rwhp just fine. But in FI setups, the pressure in the intake manifold will be working against the injector and making it not as efficient. 60lb injectors will also give you some room to grow if you want to switch out to a D1SC head unit or spin the **** out of the P1SC

sujomatt

iTrader: (7)

What if they are TOO big...? Isn't that bad too? I hear that all the time. lol

BOTTLE ROCKET

iTrader: (4)

Fuel Injection connection (sponsor) says they can modify my stock ones to flow 58, for about 1/2 the price. Has anyone gone this route?

ls1290

iTrader: (20)

Only if they are not tuned correctly. If they are not, then they will wash the cylinder walls with fuel and destroy the rings ability to seal.

sujomatt

iTrader: (7)

I'd be interested in seeing what this is about myself lol

Slowhawk

iTrader: (12)

Nope,I have plenty of DD cars running 96lb injectors.

BOTTLE ROCKET

iTrader: (4)

PM them. They say they can take stock LS1 injectors and modify them to almost any size. From what I understand, there is a 3 year warrenty on them. (And the cost is almost exactly 1/2 what new one cost)

ls1290

iTrader: (20)

They might as well be able to do that, but that just sounds too risky for myself. For my own piece of mind I would not risk a $10K motor on a set of injectors that save $200 or $300.

kbracing96

iTrader: (25)

I ran 60lbs injectors on my 4.8 before I built the 5.7 Ran great with minimal tuning.

BOTTLE ROCKET

iTrader: (4)

Posted as info by vendor (Not stirring a pot, just trying to verify quality)

"Originally Posted by XtremeMotorsports
I would like to thank you and Jon for helping me figure out this issue.
I would also like to publicly endorse this company and their ability to do outstanding work.

In addition to these injectors I also sent them a set of stock LS3 injectors and had them re-flowed to 60LBS/HR, not only were they professional I had the injectors back within 3 days from the day I dropped them off.
I installed them in a 2008 Corvette we did with a Pro Charger,Melrose Long Tubes,Random cats and X-Pipe,with a magnaflow Cat Back. I have to say this was the easiest car I have ever had to tune. I made 3 pulls and I was done !! The car drove like it was stock again.
If anyone needs any injectors, I strongly suggest you use the Fuel Injector Connection. Thanks again guys !!"