Specifically looking for a well tuned map for Greddy 20G, APS Xtreme, GTM (2871R) or JWT 850bb turbo kit running at least 15 psi.

Anyone wanna share?

 

Forgot to mention, built block (8.8:1) on straight 93.

 

cant help you there as im only running 8.5 psi. what type of information are you looking for? like, WOT timing numbers or idle and partial throttle numbers? and currently what does your timing chart look like. may have better results if you post your timing chart.

 

Im looking for WOT, full boost numbers at various pressures I guess. Here is a screenshot of my current timing map, pretty conservative I think:

 

those look ok until you get on a dyno, pretty standard. theres no way to do timing properly without sitting on a dyno and watching for MBT.

 

Agreed. I just wonder, are these so conservative that my egt's will be dangerously high? I would like to be able to street tune the fuel, to save dyno time. Then once the fuel is dialed I can go to the dyno and just start bumping the timing and watching the torque curve.

 

Here is my. Stock block Rev-up, 9psi, 91 pump. Been on this map for a while now with a/f in the mid 11's.

 

Curious, do you guys feel any transition when the map transitions from Copythru to a fixed value?

 

I dont.

 

those are fairly standard. not conservative and not pushing it. your egts will be fine.

 

Even in the 14.5 and 18.1 psi columns? I haven't ever touched those, but I did add a couple degrees to the columns below that. I bought this map from Hal by the way.

 

For stock block, yes those numbers are fairly conservative. I wouldn't increase them unless you've got a dyno and knock phones.