Trap speed way off
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
I'll talk to my wife once she gets off work. I was going to go Friday to thunder road but the track down there is 20 miles closer plus I won't have to drive back at 2am so I'll most likely come sunday.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
Next full TnT day is on the 16th, and I could probably go to that one.
Last edited by sevinn; Oct 6, 2016 at 01:43 PM.
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
They aren't doing tnt this week because of a race event: http://statecapitolraceway.com/calendar.htm
Next full TnT day is on the 16th, and I could probably go to that one.
Next full TnT day is on the 16th, and I could probably go to that one.
Safety Car
Joined: Jul 2009
Posts: 3,755
Likes: 190
From: Baton Rouge LA
St. Jude Donor '14, '16
Drifting
Joined: Dec 2012
Posts: 1,717
Likes: 28
From: O'Fallon IL
You could also try less timing. An efficient combustion chamber will work the same with less timing and possibly free up mph at the top end. How's the compression with the tfs heads? What head gaskets were used? There are so many things that can cause a slow trap but IATs is the first thing that comes to mind.
Usually, at least for me the better traction or 60ft the better mph trap. I was running 11.3@123 with a semi aggressive cam, 1 3/4 headers, or x pipe, base non npp exhaust and stock air intake before the sc. So I would certainly expect a lot more from your combo. Good luck and thumbs up for a fellow service member.
Usually, at least for me the better traction or 60ft the better mph trap. I was running 11.3@123 with a semi aggressive cam, 1 3/4 headers, or x pipe, base non npp exhaust and stock air intake before the sc. So I would certainly expect a lot more from your combo. Good luck and thumbs up for a fellow service member.
Last edited by Pitufina; Oct 6, 2016 at 06:32 PM.
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
You could also try less timing. An efficient combustion chamber will work the same with less timing and possibly free up mph at the top end. How's the compression with the tfs heads? What head gaskets were used? There are so many things that can cause a slow trap but IATs is the first thing that comes to mind.
Usually, at least for me the better traction or 60ft the better mph trap. I was running 11.3@123 with a semi aggressive cam, 1 3/4 headers, or x pipe, base non npp exhaust and stock air intake before the sc. So I would certainly expect a lot more from your combo. Good luck and thumbs up for a fellow service member.
Usually, at least for me the better traction or 60ft the better mph trap. I was running 11.3@123 with a semi aggressive cam, 1 3/4 headers, or x pipe, base non npp exhaust and stock air intake before the sc. So I would certainly expect a lot more from your combo. Good luck and thumbs up for a fellow service member.
Racer
Joined: Jul 2015
Posts: 404
Likes: 35
I'm in the same boat you are OP. I feel like my car isn't trapping what it should be. I'm an M6 car, Halltech mf103, 1.75 Catted long tubes, NPP mufflers, BTR stage 4 cam. Suppose to be making 480whp but it's only trapping 122mph. Ran a best of 11.6 @ 122 with a 1.77 60' on NT05R 275/40/17. Weather was in the 70s this weekend and about 3000 DA is what I was told. I'll be following this thread to see what happens. But I plan on getting a retune for my car soon.
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Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
I'm in the same boat you are OP. I feel like my car isn't trapping what it should be. I'm an M6 car, Halltech mf103, 1.75 Catted long tubes, NPP mufflers, BTR stage 4 cam. Suppose to be making 480whp but it's only trapping 122mph. Ran a best of 11.6 @ 122 with a 1.77 60' on NT05R 275/40/17. Weather was in the 70s this weekend and about 3000 DA is what I was told. I'll be following this thread to see what happens. But I plan on getting a retune for my car soon.
Next weekend with temps back in the upper 70s and a da in the 2000s arf still high 11s low 12s car once again runs 11.7@118 with a 1.7x 60'.
I'm going to try to get to a track this weekend and see how the new tune does.
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
What rpm is it shifting at? You want to make sure you're spinning it high enough to take advantage of the cam and heads and that trans has been tuned for faster shift speeds, more line pressure, torque mgmt reduced, etc. If trans wasn't tuned I can see you leaving some MPH on the table......
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
Update to the old thread.
The tune was redone by Shane Hinds. The car ran 11.4@123 with temps in the mid 80s and a da around 1500-1800 cut a high 1.7 60ft. The drag radials were slipping on the wheel (the person used the lube to mount them) had the tires taken off cleaned and remounted. Got a new xpipe without cats. Took the car back to the track with temps in the 60s and a da around 300-500 and the car ran 11.0 back to back at 126-127. Went back with no passenger seat and ran a 11.0@126 then a 10.9@127 hot lapping the car.
The tune was redone by Shane Hinds. The car ran 11.4@123 with temps in the mid 80s and a da around 1500-1800 cut a high 1.7 60ft. The drag radials were slipping on the wheel (the person used the lube to mount them) had the tires taken off cleaned and remounted. Got a new xpipe without cats. Took the car back to the track with temps in the 60s and a da around 300-500 and the car ran 11.0 back to back at 126-127. Went back with no passenger seat and ran a 11.0@126 then a 10.9@127 hot lapping the car.
Racer
Joined: Jul 2015
Posts: 404
Likes: 35
Update to the old thread.
The tune was redone by Shane Hinds. The car ran 11.4@123 with temps in the mid 80s and a da around 1500-1800 cut a high 1.7 60ft. The drag radials were slipping on the wheel (the person used the lube to mount them) had the tires taken off cleaned and remounted. Got a new xpipe without cats. Took the car back to the track with temps in the 60s and a da around 300-500 and the car ran 11.0 back to back at 126-127. Went back with no passenger seat and ran a 11.0@126 then a 10.9@127 hot lapping the car.
The tune was redone by Shane Hinds. The car ran 11.4@123 with temps in the mid 80s and a da around 1500-1800 cut a high 1.7 60ft. The drag radials were slipping on the wheel (the person used the lube to mount them) had the tires taken off cleaned and remounted. Got a new xpipe without cats. Took the car back to the track with temps in the 60s and a da around 300-500 and the car ran 11.0 back to back at 126-127. Went back with no passenger seat and ran a 11.0@126 then a 10.9@127 hot lapping the car.
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
Thanks for the update. I too just got my car retuned with the same mods and picked up 23hp/21tq over the previous tune that was in the car. Sad to say he was such a reputable tuner. I will not be recommending him to anybody. The new tune feels great. I'm excited to hit the track this weekend.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Thanks for the update. I too just got my car retuned with the same mods and picked up 23hp/21tq over the previous tune that was in the car. Sad to say he was such a reputable tuner. I will not be recommending him to anybody. The new tune feels great. I'm excited to hit the track this weekend.
Thread Starter
Burning Brakes
Joined: Apr 2016
Posts: 833
Likes: 119
From: Raeford NC
hell time slips beat real dyno slips a lot lol. The only dyno slip I have is from before I bought the car and it's a old slip right around 408 whp.