Tuning the Ultimate

A

AXXE

Member
I installed my Walbro 255 high pressure and began testing with the Ultimate. I tried several programs. On 94 octane Sunoco I got best performance on T3-18. My max retard was only about 2 degrees after the shifts then went to zero. My boost was only 16.7-17.1lbs until 3rd when it went to 18lbs. O2 WOT around 920. Any suggestions for more boost from a stock turbo? The engine is stock.
 
Tooky

Tooky

Serious about performance
Holy smokes!! I thought T3 was for 110 leaded racing gas "ONLY"? How does your truck run so well? What kind of ET are you getting?
 
A

AXXE

Member
I was hoping someone on here could answer that for me. With stock chip it went 12.9 with me shifting it. It still is no building enough boost, but there is no knock. I am going to E-town Friday night. I'll let you know how I do.
 
B

BillC

New member
You might want to check your timing and the timing mark on the harmonic balancer. Something isn't kosher if you can run the T3 program with pump gas and not get a lot of detonation at WOT. It sounds like your base timing might be retarded. Retarded timing might also explain the problem with building boost.
 
A

AXXE

Member
I havent checked the timing yet, but I dont think it would have ran 12.9 with the stock chip if it was off. Still it is a possibility and will be checked. Anything is possible with these things.
 
You must log in or register to reply here.
Top