Drag Racing Results - 2004 GTO 2.5" cutout results

Basically ran the same time as before just picked up 2 mph..any advice? Figured I pick up atleast a tenth??

get some tires

what were the before and after times? any timeslips? 60', 330..? i'd guess it's a traction issue given the fact you trapped 2 mph more, but ETd the same or close to it.

sounds like you lost some low end and ran a bit slower 60ft. 2mph is good, I would get up on the converter more and try and launch it a little harder then what your used to. I cant see traction being bad without a stall, my friends GTO runs 12.60s on his all season tires with a 3400 stall. He can launch that thing pretty hard.

I would get up on the converter more and try and launch it a little harder then what your used to. I cant see traction being bad without a stall, my friends GTO runs 12.60s on his all season tires with a 3400 stall. He can launch that thing pretty hard.he has an m6 car..

:emb: O yaaa! He needs to post the slip and see how his 60 and 1/8th compare!

I bought a pair of cut-outs I was going to try (never installed)....Went to track and lost a muffler after about 4-5 runs :(
So I took the other one off since it was easier than putting the one back on :)

ET's and MPH's were all basically the same (less than .05 changes) so they're still in tool box rolling around.

I guess the FlowMasters do flow pretty good Vs. all the BS talking and calling them SlowMaster.

If your exhaust flows good.... you shouldn't see much or any change and some even slow down running open headers (too much scavenging)

actually its BLOWmaster!! lol

My olds had full 3" X pipe, 3" tail pipes, with spintech prostreets, around 550hp ran mid to low 11s. I would loose a full tenth through the mufflers, I had the dumps just before the mufflers and it always ran just a little harder with them open. I did many back to back test and spin tech has some very good shit! I am going to try the same thing with the camaro once my cam goes in. Every car runs a little different.

Yea slips b4 and after would help plus the DA could of been better b4 and bad this time, 60fts help tell the tale..also if it was @ the same track etc..

Sorry for the late reply guys...thnx for the input. First time out 13.2x @ 106ish @ a 2200da scratching 1-2 and a lil scrath 2-3rd shift. This last time with the cut outs 13.2x @ 108ish with a 1100da. Dont remember scrathing 1-2nd or 2-3rd cut outs were to loud lol, both times ran a 2.0x 60' with same tires. Btw picked up some m/t et drags!!

2mph increase from just cutouts is awesome!

Da was prob 1 mph of it. Cutout maybe the other.

the ta went from 109 to 111 just from da dropping a total of 1700'.

Edit: id suggest using some bias ply front tires w those et drags.