First off, all mods are in sig.....

I was just dynoed/tuned and found out i have a leen spike at activation 4000rpm. My bottle presure was 1050-1100. I have the NX MAF plate kit with the 150 shot wet.

The jets are 62N 33F. the air/fuel mix at the spike is 14.36 to 14.71
How big of fuel jet should i go with??? I made 524 rwhp and 621 rwtrq.
My city is 3800feet above sea level if that helps????

Please help, i do not want to spend another $320.00 on a dyno tune.
NA is perfect.......
Thanks

 

a lean spike on activation is different then needing jetting.
if it is only on activation you will want to look into mounting your fuel noid as close to the rail as possable, and maybe putting a return on the fuel side.

 

I had a lean spike when I was spraying off the rail. Mine came on at 3750 so I added fuel in the tune at 3600-4000 to help the lean spike