I did a little tuning on my car with the flash software and evoscan. I had it tuned to 11.2-11.5 a/f and hitting about 12 degrees of timing going up to 15 degrees around 7000rpms. 21Psi of Boost on a 35r,but my car was showing 6-9 points of knock from 6000-8000rpms so of course the car knocked my timing down.

Is it normal for the car to have 0 knock @ 10.7- 10.9 a/f? or should I be able to hit 11.5 af without knock? Is the knock count safe around 11.5 a/f or this turbo?

Oh BTW I have ISP Racing Gt35r kit, 780 injectors and 272 gsc cams on stock gears.

 

If you have no knock by all means shoot for 11.1 afr lol, might gain some good power.

 

For your reference:

On my previous tune that I paid for, I was hitting 8 degrees of timing at sub 11.0 afr with 2 counts of knock at torque peak.

After I adjusted it, I'm hitting 12.0 AFR throughout the range with 6 degrees of timing with zero knock.

 

Exactly! Im going to try taking a little fuel until it starts pulling timing again.

 

Looks like everybodies car is different. 11.5-6 I was getting around 8 counts of knock... ill try recalibrating my wideband.

 

Is this on 93 octane?

Would easing up on the timing first, pulling the fuel to low 11's, and then readjust the timing accordingly be an option? Guru's, what do you think?

 

That was another Route to go since im using the 35r I could use low timing and higher boost like 22psi or so. Ill try taking the timing down and leaning it out when I get some DynoTime

 

Post up a timing log if you can. Where are you hitting 10 degrees? You may need to remove a little timing.

 

Here yea go....

 

I would suggest the following approach.

Keep your AFR at about 10.9 for now.
Keep your boost at 21 psi.

Consider using a map similar to this as a starting point (maybe even go a degree lower).



I assume that the 35r can hold its boost to redline, which is why the snippet I posted follows a more linear timing curve than the stock map. This should hopefully work without knock counts. If it does, up it by one degree. If you still get knock counts, go down by two.

l8r)

 

I brought the timing down about 2 degrees in the upper register and Now i just have to find a good strip to do fuel and get it back to 10-9 11.0 I also modified the knock filter to the 05 so it wont pull timing as quick. I have 0 knock now from 5000-8000.