alright ive got 60 lb injectors... the thing with them is (my tuner says) if you combine the rating of them with the fuel rail pressure you have x amount of flow an hour. i dont remember exact number
the problem with that he said hptuners will only allow a value of i think 63.5. how do you guys get around that to allow for your bigger injectors?


2. ive got an ls4 throttle body, anyone have any info on maybe dialing it in a little better? i searched and all i found was you hafta guess so i thought id check.

3. lastly after our tuning session the car performed really well. ran cool, with a good afr, no knock. but letting the car rest at idle i noticed my boost guage needle will move back and forth about 5 lbs between about 15 and 10 lbs in vacuum. what would cause this?

thanks a ton in advance guys....

 

You NEED to find another (read: better) tuner!!

There is a LOT of info for setting up 60s.

The LS4 TB is a waste for most applications.

Good luck!

 

i love my ls4 as it stands now. its treated me pretty well. we posted a 10 hp gain off of it and ive already gotten used to it. just wanting to see if anyone had any info on a way to get a smoother idle out of it.... and the tuner i used is pretty well known around here by the pro street kids and for knowing what hes doing with those so i figured id give him a shot on an ecotec....