We picked up 40hp at the wheels from 5,000 to 6500 rpm! The IATs were reduced about 40 degrees and this helped the computer from adding fuel up top when the old pump would allow the IATs to get too high.

Final Renntech pulley/tune dyno is now 460rwhp. The top end is back too!

Mark

Did you replace with the same pump (OEM) or non OEM?

Thanks

did you force the stealer to do this? Or is the replacement non-oem, like the marine pump used by some E55 guys?

Mark,

Time for Stage 4. Anyways, you should replace the pump every 7,000 miles. My technician says the OEM ic pump is notorious and will not last too long.