I currently have stock 22lb injectors which are leaking, and causing the car to run bad (hard starts etc.). I was offered a set of 28lb corvette injectors and was wondering if they would work fine just popping them in place of the stockers or would I have to do a lot of tuning. Keep in mind that my car is stock (except for a few bolt-ons).

 

You wouldn't have to have a "lot" of tuning done per se, but it will NEED to be tuned, no questions asked. Talk to chips@pcmforless.com, he'll hook you up good.

 

would it improve or decrease the performance of my 93 LT1

 

It all depends on what your mods are. Even if you're bone stock I'd say that you have a few HP to pick up over a stock tune, but how much I really can't say.

 

The mpgs drop though right!

 

w/o a tune you will see a drop but with the tune it will hardly be noticeable

 

If you're stock, there will be ZERO gain from larger injectors.

 

I was speaking more of the tune. I know for a fact that the chip guy for PCM for less has picked up a substantial amount of power off of a stock car just by tuning it.

 

about how much does the tuning unit cost? What king of chips/units can I use to imcrease the performance? Is it really worth it?

 

Sent you a PM

 

97, 98, 01, 02 and 03 Corvette injectors are rated as 28.8# at a pressure of 58 PSI. (4 bar)

LT1 runs at a pressure of 43.5 PSI. (3 bar)
This will make the injectors flow less than 28.8# - 24.94# to be precise. If swapped in an 94-97 LT1, they won't even need adjustments, but on a 93, you could either go with a 99-00 Camaro/Corvette set of injectors or get a replacement set of stock 22s if you don't want it tuned. The 99-00 ones were rated as 26.4 and will flow 22.86# in an LT1, which is close to the stock 93 injector flow rate.

I personally would recommend a set of stock 94-97 injectors and a tune.
Some people complained about LS1 injectors leaking in an LT1 and they needed to get a spacer to fix this problem. FWIW, I ran them for a while in my car and they did not leak.

 

I have a set of 22lb injectors that came off my with 50K miles on them. Let me know if you are interested.

 

Oh, misunderstood you then. Agreed!

 

Yeah I'm interested, email me with the price!

 

You have mail.