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I agree the oldwing FI INFO IS LIKE NON EXISTANT ...HOW DOES IT DETERMIN MASS AIR FLOW ...IT HAS A THROTTLE POSITION SENSOR ...BUT IT TAKES MORE THAN THAT TO DO ANYTHING CLOSE TO RIGHT ...AND SEEM TOTALLY NON ADJUSTABLE ... ON FARM TRACTORS GOVENORS OR RPM LIMITERS CONTROL.INJECTION RATE AND...

Adjustable fuel pressure is a good option to add ...on my vettes ...it's somewhat like a adjustable fuel jet ...the fitting are like what I used ...the deal on my mind is proper mixing of the ignition timing and fuel timing ...it takes a certain amount of luck to part mix In this environment

Very good points Rednaxs60 ..I think the vette ECU is at higher grade than oldwing Blackboard .. The vette uses MAF sensor ..it will pass more air than my heads can and they are the best for SBC ...SD SET UP I jUST don't have or want ...the MAF and TPS send signals to ECU that can change fuel...

It's amazing the things you can figure out ...my dive into EFI THROUGH THE C4 TPI VETTS HAS BEEN FUSTRAITING ...mostly by all the bad info out there ...and not much on real info from people with smart hands ...as it was in the oldwing world so it is with the c4 vette world ...slanted bad towards...

Hmmm I where full face helmet ..I will protect my head completely ...lol I also modded in a bigger ram air type deal ...for when face is totally in use ..head first then maybe other stuff ..but always for me protect the head completely ..

I just got back fro a ride ...the outcome was great ...the car is not the fastest setup ..but it runs on 87 grade fuel ...runs in the 150 degree range on motor ...compression is on the lower side maybe 8.5 ...this about cures any pinging or knock issues...very safe motor set up ..requiring very...

Hooch will not ever be sold lol

Yes Denver hooch has been sidelined also lol but it ran went parked So as my c4 has highly modded biggest jump is fuel injector bump.from 22 lbs.to 36lbs. The computer now is in open loop on a fuel map and ignition curve set up cold start running much like a cjoke works on carbs and for...

I am going to do a plug check soon. ...to how how good new distributor is firing the plugs ...maybe make adjustments in plug gap ...

Oh great pics showed up lol magic ...I didnt change the cam but I did enhance it TPI motors are lower RPM HIGH TORQUE motors so changing to aggressive cams for high rpm doesn't pay off that well mismatch to intake system ..in the pics you can see a mix of roller rockers and stock ball and socket...

Can't get pics to post anymore ..thanks Rednaxs60 I will keep posting but pics are important

There are no good old days in America anymore ...anyway I was able to get the distributors I needed for the vetts ...it was difficult and took several months ...in today money it was a bargain and the only place in the world that make these new is China ...these distributors were short run deals...

Another recent mod was the small cap distributor ...you can see the first performance after market TPI intake ...the big cap HEI with coil in the cap was replace just super pain in the Butt to mess with .The mod just needed a place to mount external coil ..in the pic it's in the left of...

Nice sounding vette Motorhead

You can see in the pic that the dual exhaust exits the center of the car . the c4 vette are the only car I ever had where exhaust goes strait back and underneath rear end . then it went left and right 4 90 degree turns to have exhaust exit both sides of the car . I decided no I don't want that...