stock VIII 10.5 turbo mate and old gen Greddy profec B ebc. wish I could make to hold more boost up top. gotta try hallman

knocks on spool up, I think due to my aggresive afr's. I'll sort that out, it is my first log. is timing high too ?

as a side note it's 2.3 with S2 cams and 3" turboback

 

I'd think your low boost timing is a touch aggressive .

With my s2 cams I'm down to 4 or 5 degrees closer to your 100 load mark around sub 4k.

 

A little agressive on your logged run from 4750 up top. Mainly because you don't hold boost. If your car doesn't knock, I'd say that this is okay. At 15-16psi it's somewhat normal to be able to run that much timing, especially on 93. Just make sure you're not always on the edge of knocking.
Your 10.5 VIII won't be able to hold much boost with that cammed 2.3L, which sucks craploads of air ...
maybe ECU boost would hold a little more but not much.

 

Thoughts? seems like it likes the timing fairly low on the low end.

 

What fuel? Also, are you on SD? Just curious why load is so high for your boost levels. timing does seem pretty low in the low and mid RPMs. Will it not take any more than that?

 

Yes sd. There's a ton of resolution though so it seems kinda drawn out but it's not that bad

93 oct my kpa load 1:1.

Still trying to sneak an degree in here and there but as of now my clutch is weak :/

 

Hi, wanted to share my ignition map. That is 2,3l, stock evo9 turbo, kelford tx272, hitting 280-300 peak load depending on the gear at 25-26psi peak boost, 93 octane (98ron). No WOT knock, sporadic spool up knock.

Any input would be aprecciable.



updated

 

Too much timing at low rpm, full boost IMO.

 

What kind of turbo and mods? That seems really low at 350 load. But what do I know I was running way too high on my top end

 

Raptord,

I'm still trying to learn here. So are you saying at full boost (Load 280) timing is too high? I'd agree with that. What about loads 100-120? It seems high to me.

 

Yep, from around 240-onwards or so, timing should be lower. I'd say 3° at 280/3500rpm.

100-120 might be a tad high as well, but not as alarmingly as high load.

 

The goal is to make the most torque in low to mid RPM.

Why do you consider it to be too high? As far as it makes power and doesnt knock...

 

Just because it doesn't knock doesn't mean it's perfectly safe. Your rods could be taking a beating from that much timing without it actually knocking.

6-8 degrees at peak torque is usually E85/race gas territory, not pump gas.

 

I don't think it has much room for high air temp, bad fuel. Your 93 seems good up there in Russia ... For street it's "acceptable" IMO.
A lot of people with US 93 run around 4* at peak, you are a little agressive.

 

Assuming he went further than MBT... but on pump gas?