OK, here is some back story....
My last dyno was at the dyno-day on March 20th at High Speed in Chicago Ridge. At the time my only mods were flowmaster catback and K&N FIPK.
The car as completely cooled down before my pulls and it pulled 416 hp and 395 tq, but ended up blowing my FRP sensor (some of you may remember this.)
So fast forward to today....
I have since installed a MRT off road H pipe, and just purchased the SCT flasher from Sutton High Performance. Ryan @ Sutton was cool as hell, and he managed to squeeze me in this morning for a couple of dyno pulls (with only a few days notice.) :headbang:
OK, so after a long drive, the car gets on the dyno with almost no cooldown and after 2 runs the best was 373 hp / 379 tq. WTF? I know that comparing one dyno to another is not advised, but a 40 hp LOSS??? Can the heat make that big of a difference?
So then they installed the performance tune with the flasher, and did a couple more pulls. This time it was 399 hp / 388 tq. I was extremely impressed with the gains (26 hp / 15 tq), but still wondering why I am so much lower than my first pull.
They did use a tailpipe sniffer to check A/F (they can also do wideband) and the first runs before the flasher were very rich. After the tune, it had leaned up to just about 12. They were unable to print the A/F for some reason, so they didn't charge me for it.
So here is the graph from today.
On drive home, the car definatley felt quicker. But the idle is kinda bouncing, it will probably take a few cycles to smooth out ( I hope.)
Any input is appreciated!
My last dyno was at the dyno-day on March 20th at High Speed in Chicago Ridge. At the time my only mods were flowmaster catback and K&N FIPK.
The car as completely cooled down before my pulls and it pulled 416 hp and 395 tq, but ended up blowing my FRP sensor (some of you may remember this.)
So fast forward to today....
I have since installed a MRT off road H pipe, and just purchased the SCT flasher from Sutton High Performance. Ryan @ Sutton was cool as hell, and he managed to squeeze me in this morning for a couple of dyno pulls (with only a few days notice.) :headbang:
OK, so after a long drive, the car gets on the dyno with almost no cooldown and after 2 runs the best was 373 hp / 379 tq. WTF? I know that comparing one dyno to another is not advised, but a 40 hp LOSS??? Can the heat make that big of a difference?
So then they installed the performance tune with the flasher, and did a couple more pulls. This time it was 399 hp / 388 tq. I was extremely impressed with the gains (26 hp / 15 tq), but still wondering why I am so much lower than my first pull.
They did use a tailpipe sniffer to check A/F (they can also do wideband) and the first runs before the flasher were very rich. After the tune, it had leaned up to just about 12. They were unable to print the A/F for some reason, so they didn't charge me for it.
So here is the graph from today.
On drive home, the car definatley felt quicker. But the idle is kinda bouncing, it will probably take a few cycles to smooth out ( I hope.)
Any input is appreciated!
