Tuning my CAR

[PhilM]

Just put the scanner (snap-on) on the car and i have no codes but the scanner says i have knock but no knock retard degrees (0). Also the car is runnin a lil rich (O2's appx - 785mV). BLM-128, idle rpm - 1000; i am running on 93 octane and havent taken the car out yet on the road to open it up (no inspection stkr. yet). The fuel pres. is 45psi, 55#inj, TE-61, extender, trans. +, forged pistons (could this cause some false knock when cold??!). The chip calls for 98 oct. but im not boosting it yet. Also, i dont have any EGR setup - will this cause probs? Any comments appreciated - this is my first GN tuning process.

 

[Sleeper-6]

Well I'm pretty sure the Extender does not use the EGR at all, so not having yours should not hurt you at all.

 

[Russ Merritt]

Forget that scanner and get a scanmaster. 785 isn't rich, I like to see 800-820s. If the chip calls for 98 octane don't run anything else unless higher. You wanna learn how to do HGs? I'd rather run the correct fuel and have fun.

 

[justabuickv6]

785 isn't rich. That is what a lot of people like to tune to or around. In my opinion, you don't want to go any less. This of course should be the lowest number after a full 1/4 pass.

You'll notice a huge difference (worse) if you bump it up to around 800-810. However, 800-810 is more safe.

The leaner the meaner but be careful.

F.Y.I.
O2 sensors aren't that accurate when it gets near the .7's. I like to tune for no knock. If you have a EGT, what would help.

 

[PhilM]

so i guess i shouldnt look at the fact that the snapon says i have knock? If theres no retard, whats it matter.

Ill bump up the octane a bit and see how she runs, thanx