i have a fully built d-16 with y8 head and p28 ecu jut got it back and in from pistons and rods balancing already had skunk stage 2 cams titanium springs and lifters msd ignition

so it starts and idles fine starts out rich but then runs just slightly lean but wont rev at all. could it be ignition timming or cam timing ? or just in need of tune ?

 

lol did u hook up ur throttle cable?
im messin does it not rev at all or does it rev a little bit and then seem like its hitting an early cutoff?

 

sounds liek you need a good tune and to give everything another look down make sure all your lines are lubed and nothing snagged or not connected...

 

do p28's have to re-learn?
bcause it kinda seems like it is trying to learn right now it it is runnung full rich on the AF gauge then it will start to go lean untill it is about to stall then jump back to full rich

 

bump

 

u need to have that thing towed and get it tuned..i wouldnt really suggest driving it much till you do

 

http://cgi.ebay.com/ebaymotors...ZWD1V
do you think that this is good for uberdata i have afriend with the wideband and burner and software

 

You can get that same kit from Moates.net

I have purchased a few kits from there.

Better to go with a known good seller than possibly get ripped off on ebay.

 

also could a high fuel presure cause these problems ? it is running about 60lb of presure

 

bump it up

 

Did you get ur ecu chipped? I'v heard of people getting chips and they fubar on the program causing lack of rev.

 

we need more information, that doens't tell me anything useful to diagnose...
What model, what was done wiring-wise?
And yeah, if you're using aggressive cams and pistons, you'll need to tune it.
And why are you building an engine if you don't know that much <-- rude.. i know..