Hey guys, looking for a little help with my tune for my 1975 CeeBee Avenger Jet Boat. I swapped the 454 big block out of it, and stabbed in an LQ4.
Before:
After:
Build Thread: http://www.performanceboats.com/html...ad.php?t=62463
ANYWAY, I am having some problems with getting my setup to idle / respond to throttle input.
Here is my setup:
-Stock bore, stock compression LQ4 6.0L
-Lunati 224/232 .585/.590 114+4LSA
-Patriot Golds and Comp pushrods
-LS1 intake with "2004 GTO" injectors
-Aeromotive fuel rail
-C5 Corvette return regulator/filter
-Bosch 044 fuel pump
-0411 PCM with COS5 - manual trans parameters
-Speed Density, Open Loop (no O2 sensors, No MAF, stand alone IAT sensor wired in, K&N cone filter on the throttle body
-Water jacketed aluminum log exhaust manifolds.
I seem to have changed a lot at once as far as the engine goes (cam, intake mani, intake tube, exhaust) and it wasn't idling worth a damn until yesterday. It is WAY rich, and I pulled a little fuel out via the VE table until I can get my wideband on it.
I have never tuned a motor with a cam this aggressive....most of my experience is with stockish cam boosted setups like my turbo 5.3L.
I know a copy of the tune and a log file are pretty much required for any help here, and I will post my tune and a log when I get home from work in a bit, but with the changes i've made to the core engine, can anybody give me some advice on where to start with this thing?
I followed most of SSpeeDemon's idle tuning tutorial and copied his values and it seems to have helped a lot...I just need some help to keep moving on this thing to get it running. Once I get to that point, I can do the AutoVE stuff no problem.
A BIG THANKS IN ADVANCE!!
-Jeff