Kpro Ignition map fluctuation and engine break up before vtec

K-Series Programmable ECU installation questions / support issues
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Nhtkid
Posts: 2
Joined: Wed Oct 12, 2022 6:25 pm

Kpro Ignition map fluctuation and engine break up before vtec

Post by Nhtkid »

K24/k20 full bolt ons, 25deg vtc, prayoonto 4 cams, twm 54mm itbs, id1050 Injectors, straight e85, iridium laser spark plugs, good grounds (to my knowledge) I didn't have these issues with a plenum. I used a vac meter on each trumpet to sync itbs. Fuel pressure is at 50psi.

I'm working with a tuner and what I'm seeing on the graphs is weird. It feels weirder driving. It's almost like an ignition wall. It happens at tip in which you can see and then between 5k and 6.5k. You can see it on the rpm graph during wot. I know its running rich rn and I'll adjust that but that doesn't account for the ignition dripping out on the map. Any insight?

I'm stumped.

I've replaced I'm gasket and exhaust gasket to ensure a proper seal. Tps signal looks OK but there is a small hiccup up top by 1% you can see.

My other thought is this.. I have a 25 deg vtc.. my map has higher than 25 on the tables and it appears to me that the break up might be happening when the map is commanding more than 25deg. Would that cause it?
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Nhtkid
Posts: 2
Joined: Wed Oct 12, 2022 6:25 pm

Re: Kpro Ignition map fluctuation and engine break up before vtec

Post by Nhtkid »

I can email logs to anyone interested. Please lmk.
TTR
Posts: 106
Joined: Wed Mar 31, 2004 8:48 pm

Re: Kpro Ignition map fluctuation and engine break up before vtec

Post by TTR »

Can you post the calibration and a log?
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