91 RB26DETT stock internals with bolt-ons, 550 cc injectors, N1 turbo's, etc... running Power FC with a tune from Eurocharged. Stock MAF's are still in place and running LS2 coil on plug.
It starts and idles nicely at 1,000 RPM (tuned for this) and timing shows at 20 Deg after it is all warmed up. Solid vacuum and it pulls pretty hard at 1.2 bar.
The problem is when pulling away from a stop it hits a little hesitation right at 2,000 rpm and then pulls smooth after that.
So far, I've checked all wiring connections, timing, obvious things and then last night I pulled the MAF's and opened them up. They both look fine but I re-soldered the connectors anyway because I was there. No change at all today. Looking at the Power FC it shows MAF voltage at approx. 1.000 mV at idle and I watched it hit around 4.350 mV when doing a hard pull yesterday up to about 7,000 RPM (hard to see when you're watching the road too).
I was going to pull the plugs out and have a look but they were only replaced last year in October sometime and probably only have around 1,000 km on them - will check them out tomorrow night.
Anybody have any other ideas here?
Thanks!
It starts and idles nicely at 1,000 RPM (tuned for this) and timing shows at 20 Deg after it is all warmed up. Solid vacuum and it pulls pretty hard at 1.2 bar.
The problem is when pulling away from a stop it hits a little hesitation right at 2,000 rpm and then pulls smooth after that.
So far, I've checked all wiring connections, timing, obvious things and then last night I pulled the MAF's and opened them up. They both look fine but I re-soldered the connectors anyway because I was there. No change at all today. Looking at the Power FC it shows MAF voltage at approx. 1.000 mV at idle and I watched it hit around 4.350 mV when doing a hard pull yesterday up to about 7,000 RPM (hard to see when you're watching the road too).
I was going to pull the plugs out and have a look but they were only replaced last year in October sometime and probably only have around 1,000 km on them - will check them out tomorrow night.
Anybody have any other ideas here?
Thanks!
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