finally figured out the damn fuel injection. it took about 175 dyno runs (so you know this motor is well broken in) and 4 days of 10 hours a day screwing around with different things.
I ended up with this. I stopped the runs at 60-65 as I was just interested in low end tuning at this point. 67.4 rwhp
mods are.
AMR 800 12.5 piston (gas ported, teflon coated, with CP rings)
bored and Nicasiled Brute cylinders
XX cams (new style)
Dynojet PC3 and Ignition module
Moose module
Larger 24.5 lb injectors
stage 3 spidermod clutch
epi maroon spring
EHS lid
stock heads airbox and throttle bodies
stock air filter
this chart compares his previous setup stock motor with muzzy std and EHS Dobek FI controller and stage 3 clutch with maroon spring.
Here's the comparison of no moose module VS installing a moose module from a CDI/carbed prairie/brute. I cut and spliced it into the EFI computer to override the timing settings all the time. Damn it worked for the low end that was missing.
it's a damn good running machine for just a bolt in engine kit.
there was a ton of Map sensor tricks and Idle control tricks that I had done/tried to make it work better. leaving everything that controlled the FI stock (map sensor, temp sensor, IAC control unit) I had it to a best of about 59 rwhp. what would happen is the map sensor voltage would change drastically with every revolution of the motor. not at idle, but just off idle. it would read max lean, max rich about 25x per second causing the computer to blunder and just flood it with fuel causing the lag. but I figured it out.
He had better not crash this thing. it''s far faster than that built 700 Vforce that he has. That's how he blew it up the last time and started this whole build.
Finally after many pitfalls in the build process, it's done. he'll pick it up tonite. I think it will have been worth the wait, It came out better than I had expected. I told him he'd be lucky if I got it to 65.
John
Linear Mode
