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Are you sure the log is right? I don't think you can hit 300 load cells with a Evo 9 turbo at 25 PSI. I feel your loosing a lot of power in the mid range especially post 200 load cells in the boost range.
I run a 25G turbo at 26PSI and the load cell I hit is 260~ and AFRs are at 11~ at WOT and 12~ at spool.
Ill take some more logs when I get my evo back, should I try upping my timing and lean out my afr in the mid-range area?
From 200 to 250 in the RPM range 3k to 6k start with a 4 degree increase and taper to 1-2 degree at 6k. I am sure your car will not knock much as long as you ensure AFRs are under 11.5.. Run a log and let us know.. If need me I can look an my old map that I ran fast and clean on a evo 9 turbo with stock cams.
From 200 to 250 in the RPM range 3k to 6k start with a 4 degree increase and taper to 1-2 degree at 6k. I am sure your car will not knock much as long as you ensure AFRs are under 11.5.. Run a log and let us know.. If need me I can look an my old map that I ran fast and clean on a evo 9 turbo with stock cams.
What is the ambient temperature at your location?
Hey, I'm stationed in San Antonio Texas, so it's hot(70-100s degrees) pretty much 8 months out of the year. If you can upload the map you were talking about so I can get a better idea of how it should look, id really appreciate that.
@Tomkun This ignition map is for an Evo 8 2.0L with 9:1 compression and 25 psi boost flat across the rev range, Kelford 272s and 91 gas. The safe operating ambient temp range is 70-100 deg F.
If you are running 93 gas you should be able to add a further 1 - 2 degrees timing without knock, but you must check!
@Tomkun This ignition map is for an Evo 8 2.0L with 9:1 compression and 25 psi boost flat across the rev range, Kelford 272s and 91 gas. The safe operating ambient temp range is 70-100 deg F.
If you are running 93 gas you should be able to add a further 1 - 2 degrees timing without knock, but you must check!
Hey, so I tried your ignition map with +2 on all the cells after 100 and it felt a lot smoother/stronger. I did encounter a knocksum of 6 at one point so I’m going to try lowering the cells back down 1. Thank you again.
Hey everyone, I want to start by saying I am not a tuner but engine builder but I do tune my personal, friends and family cars. Here is my timing map. It is evo 8 2.0L build engine 10.5 compression running 6466 next gen turbo and e85 fuel (e75 currently from pump) At this moment running around 35psi boost but I will eventually run 45-47psi but before I crank the boost that high I have a question. On my current 35psi boost my peak is around 5600-5700rpm and around 3.5 degrees timing and around 8.0 degrees at 8,500rpm.. Am I too conservative with this timing? I know every car is different and best way is to put the car on dyno but currently only street tuning is available. Car is running amazing but I am wondering if I am too conservative? Thanks!!
10.5:1 ouch. Not alot of wiggle room with timing and that compression. I would stick it on a dyno and keep it on the soft side so the head gasket lives.
10.5:1 ouch. Not alot of wiggle room with timing and that compression. I would stick it on a dyno and keep it on the soft side so the head gasket lives.
I know, that's why I am playing safe. My last motor was also 10.5:1 compression and was running on similar timing for 6 years, then I started to be hungry for power and finally lifted head on 6466 at 44psi boost 7 degrees on peak and 14 degreest at 8500rpms hehehe. Now I am playing safe. Car runs excellent on this timing that I posted but I am wondering how much I left on the table. I will take it on a dyno whenever I have a chance. Thanks!!
This is my ignition table after installing Tomei Poncam 260 at 0/0 in an Evo 6, the car does not knock at all,nothing!! I had to increase the WG duty cycle from 5k to 7.5k rpm, to maintain 22psi with 1580series turbo, it seems that the car wants more and more ignition advance but I am afraid to go too far, I am using 98RON fuel i´m in 240-220 load with full boost
Last edited by forfi_xr2; Apr 29, 2025 at 02:16 PM.
I'd probably lower it from 3000-5500.
Paying for an hour of dyno time if possible will show you exactly what it likes. Just becuase it takes it on one run doesn't mean it will live. Usually you can make good power per degree of timing, then back it down 2'.
