Quote:
Originally Posted by oneredry
Hello everyone, been a minute since I've posted anything. but last night was on the highway with absolute no one on the road, did a small pull coming from off the ramp to the highway, stayed into it till about 5th gear and let up (I wont' say the speeds) in anyrate, I see the check engine light flash on and off for about 45 seconds until i got off the highway. when i pulled to the stop light the light went away (went home and checked it). Keeping in mind that the car only has about 9800 miles on it, and when i was in it, I can tell that the supercharger belt was slipping as when i looked over i noticed that my boost gauge peaked at 8.4psi which I've never seen it go that high. (has been dyno tuned) a step down smaller pully has been put on, and the belt has not been replaced upon that new pully. Never really had any issues especially a misfire code. what I'm thinking is that with it being full throttle and the belt slippage (you can fell it) maybe the air/fuel wasn't getting?
- what are your thoughts? i did drive it around for a bit and light never came back on. I normally don't beat on my vehicles and thought it was a ok idea just to stretch her legs a bit.
|
I have said this over and over, NO LT1 should get a supercharger with more than 6 psi boost without fuel system upgrades, i.e. Lt4 fuel system components.
Even at 6 psi the car will need a JMS fuel system voltage booster so the low side pump can keep the high side pump fed with that much fuel demand.
570 RWHP is the absolute Limit of fuel supply from the LT1 High pressure pump and injectors.
This leaves no room for extra fueling to supply Cat Overtemp Protection will request.
As soon as you exceed 6 ms of injector opening it will drain the high side pump and the car will misfire.
When the low side drops the high side drops hard also.
CAUTION MANY TUNERS WILL COMMAND A VERY LEAN POWER ENRICHMENT NUMBER TO STRETCH THE FUEL SYSTEM
THIS IS BAD BECAUSE IT RAISES COMBUSTION TEMPURATURES WHICH EXPANDS THE RINGS AND LEADS TO DETONATION AND PISTON FAILURE
At absolute bare minimum you need a JMS fuel system voltage booster.
But I strongly recommend an LT4 fuel system upgrade package
https://jannettyracing.com/products/...2018-camaro-ss
1LE cars and 19 up cars do not require the low side pump so you can select to delete that from the package.