stevemiller67
New member
- Joined
- Feb 27, 2014
- Messages
- 73
So I ran my truck on the dyno last Saturday and could only get 630hp at best out of it which is lower than anticipated. I noticed on the few test runs on the street the truck smokes excessively as it did on the dyno as well. The truck doesn't seem to come alive in the higher rpm like I thought it should either, but I believe this overfueling issue is why. The engine mods are the following, DFI 5x18 SAC injectors, 13mm pump( professionally built at an injection service shop) 0.93 lines, airdog 200(holds 55-60psi) , s480, 188/200 cam, ported/polished head with runner intake, with supporting mods. * The pump was set 25* timing and 600cc's of fuel for a base line and the truck smokes excessive with the turbo fully lit @45psi of boost. *First tried going to 30* timing but gained no power and smoke levels were the same, then pulled the fuel plate all the way back and the smoke levels dropped some but still would not clean up. So my question is, are the injectors too small and hanging open to long into the exhaust stroke causing the smoke issue? I'm going to pull the injectors and test them but would like some opinions on the matter. I was planing on going bigger for injectors but am putting this project on the back burner for awhile so I wanted to run it where it was at and see what it did.