Hey guys, I apologize in advance for the long post.
A friend and I were working on our trucks yesterday and I was installing the Sinister charge air pipes and the intake elbow. After we finished it up we took it out for a spin to see if all the boots would hold.
I have been running IDP's Xtreme street for probably 1,000 miles or so and I really like the throttle response and the range that the power curve comes in. I have NEVER held the throttle wide open on this tune, especially for any length of time.
Well, we did yesterday. I rolled into the throttle until about 30 mph and then floored it. the power was there for sure BUT once I got to about 80 mph the truck seemed to surge, almost like the programming was defueling the truck or something, then all of a sudden the power would come back again.
Fuel pressure stayed at 54 psig at WOT, boost was at 32-33 psig, accelerator position was 99-100 %, ICP pressure stayed maxed out during the pull. We did this a few times and monitored different values on my CTS insight. All numbers looked to be correct though I cannot recall them off the top of my head.
In my mind, the only thing that makes sense to me is that I "ran out of injector". is this possible? other than being bulletproofed with a 68mm pmax and the typical 4" exhaust the truck is "stock". no fuel system mods, stock injectors.
any ideas????
A friend and I were working on our trucks yesterday and I was installing the Sinister charge air pipes and the intake elbow. After we finished it up we took it out for a spin to see if all the boots would hold.
I have been running IDP's Xtreme street for probably 1,000 miles or so and I really like the throttle response and the range that the power curve comes in. I have NEVER held the throttle wide open on this tune, especially for any length of time.
Well, we did yesterday. I rolled into the throttle until about 30 mph and then floored it. the power was there for sure BUT once I got to about 80 mph the truck seemed to surge, almost like the programming was defueling the truck or something, then all of a sudden the power would come back again.
Fuel pressure stayed at 54 psig at WOT, boost was at 32-33 psig, accelerator position was 99-100 %, ICP pressure stayed maxed out during the pull. We did this a few times and monitored different values on my CTS insight. All numbers looked to be correct though I cannot recall them off the top of my head.
In my mind, the only thing that makes sense to me is that I "ran out of injector". is this possible? other than being bulletproofed with a 68mm pmax and the typical 4" exhaust the truck is "stock". no fuel system mods, stock injectors.
any ideas????