Hey guys, so I was able to log the car today for the first time after my rebuild with a safe tune. The car pulls great and feels real strong on pump gas, 24 psi, and has almost no knock, but when I logged it, it showed about 20-22 degrees timing throughout the pull...with little knock and 24 psi and the a/f ratio was in 11's...so everything seemed right until I made this log lol. I'm glad the car pulls strong like it should, I'm just scared something isn't the way it should be since it has very advanced timing and almost no knock. I obviously tried retarding the ignition timing, even though it already was set to 10-18 degrees timing during WOT, so I retarded it even more, but nothing changed, so I'm sure it has to be something like base timing or something like that. Here's a log so you guys can see what I'm talking about. Anybody know what can cause this? Any help or input is appreciated!

Thanks!

 

ttt for some help!

 

anybody??

 

Modlist would be useful.

 

bolt ons, stock turbo still, rebuilt stock motor, that's all basically. Tuning wise I have a UTEC. I might get rid of that because I got a good deal on a different piggyback. I don't think the mod list helps though, I think it's something electrical wise maybe like some sensor is bad so it's reading timing bad, but I think I would have thrown a code for that, but I haven't so I doubt it's that. Maybe the base timing is off? any input appreciated!

Thanks!

 

Ditch the UTEC. How can you trust your ECU logs when you have the UTEC intercepting and changing all the incoming signals?

-Paul

 

Yea, I'm gonna take it off tonight, and retune the car via ecuflash, and log it and hopefully it's gonna be normal. The weird thing is that I logged it via evoscan and utec, and the same numbers came up. The utec worked perfectly 2 weeks ago when I logged it so maybe it isn't the utec's fault. I'll see after I take it off, and if it isn't the utec's fault, what else can it be??

Thanks

 

The most I ever see timing wise at peak torque (peak load percentage) is usually around 8* with a stock turbo and stock cams on 93 pump gas and 0 knock. Anything more than that is usually pushing it in my case, so I very highly doubt you're running 20-22 degrees at peak.

 

If your base timing is off, your car wouldn't feel "great" powerwise. It'd have choppy/erratic idle, and most likely be pulling timing if overadvanced. Pull out a timing light and check it.

ps. check your crankshaft angle sensor if you REALLY think there is an issue. The more efficient the motor breathes the more the 'barrier' can be pushed as far as how much boost/timing you can throw at it on a certain octane fuel. Do you have any headwork/porting?

pps. he meant at the top of his timing map. 22degrees of timing at peak torque is impossible on a forcefed 8.8:1 compression 4g63, ESPECIALLY on 93octane LOL.

 

The UTEC is skewing the numbers.

 

-No headwork or porting of the head whatsoever. APEX cleaned the head up and changed the stems, seals, etc, so i doubt they screwed anything up.

-The car has a great idle, pulls hard as hell, and doesn't feel to be off or anything like that.

-I'm gonna take out the UTEC tonight or tomorrow and try to just do a base safe tune and do a pull and see then what the timing numbers are.

-Just look at the log and you'll see my timing numbers, I doubt those are the correct numbers, but that's just what it says with zero knock, so yea, I don't know lol.

Thanks for the input guys!