04-05-2021, 07:41 PM | #1 |
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I'm looking for info on what a Stage 2 M2C (tune and downpipes) runs and traps in the 1/4 mile.
I did a single 1/4 mile run using draggy at an airstrip (non-prepped surface) and clocked 11.97 @ 119mph with a 2.01 60ft and a DA of 1528. Used Launch Control @ 2500rpm 0-60 mph came in at 3.76 with 1ft rollout. Was really expecting better numbers and especially higher trap speed around maybe 122-124mph. Disappointing Anyone else have numbers to share?
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04-05-2021, 10:56 PM | #2 |
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Well a 2.01 60ft is terrible and will kill your 1/4 time. That’s a lot of wheel spin.
Drive it correctly for a 1.65 60ft and your 1/4 mile will be 11.35 |
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04-05-2021, 11:07 PM | #3 | |
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Maybe a prepared drag strip would provide better traction and improve the 60ft
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04-06-2021, 05:54 AM | #4 |
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60 ft time has no baring on trap speed for RWD cars. If anything, bad launches usually result in slower ETs but better trap speeds. Better launches = better ETs and lower trap speeds.
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04-06-2021, 07:37 AM | #6 | ||
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A 2.01 60ft is on the extremely slow end of the range. My NHRA Super Stock car 60fts 1.3 and runs 9.7 with 580 hp. 2.01 is filled with wheel spin or very intrusive power limitation on any car. |
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04-06-2021, 11:23 AM | #7 | |
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I do agree that I'd expect at least 125 MPH trap speed out of a Stage 2, with or without a bad launch. |
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04-06-2021, 11:52 AM | #8 | |
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04-06-2021, 09:19 PM | #11 |
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Pilot Sport 4S - 275/30 front and 295/30 rear
Tire pressure 35
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04-07-2021, 12:31 AM | #12 |
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4S’s dry grip is average, S007A has better dry grip when new. 35 psi is too high for drag, 295 not wide enough for drag at your power level
I would go 305 R888R or at least the S007A if you want a tyre that is usable in pouring rain Then from there drop the tyre pressure to 25psi to start with and then experiment it further You will have good results with the above setup |
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04-07-2021, 01:46 AM | #14 |
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Aren't you all missing the point? The OP's sig says he has 524whp, so close to 600hp crank, nearly 200 more than stock. It wouldn't matter if he had concrete rings as tyres, it should still trap well over 120mph.
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04-07-2021, 11:21 AM | #15 |
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Exactly my point. Too much emphasis is being put on the 60 ft and ET and not enough on the trap speed. He should be trapping at least 125 mph regardless of how bad his launch is, unless he totally bogs down.
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04-07-2021, 01:17 PM | #16 | |
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I would like to reiterate that this was a single run, in the "real world", not a drag strip, using draggy in an area where the signal was cutting in and out so maybe it wasn't super accurate? Not sure. Still, I'm surprised nobody else here has some actual numbers to compare to. I would have thought that my trap speed would be around 124-125mph so maybe the dyno read high and not really making 520whp?! I believe uncorrected number was 490whp I think the stock M2C traps around 114mph
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04-07-2021, 01:44 PM | #17 | |
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04-07-2021, 04:53 PM | #18 |
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maybe if you could just humor us? set your rear pressure to 28, front to 40
turn off launch control and traction control etc, do a 5 second burnout out of the water (pull around the water if you can and back into the wet area but not the puddle so you don't get your front tires wet and drag water up to the starting line) get the feel for what RPM to launch at and what rate to feed in the throttle, which could take several runs try to get the 60ft down to 1.6 and see what your MPH comes up to without the nannies you might be surprised how far down the track you actually get with the nannies enabled before they let the car have the full power |
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04-07-2021, 06:09 PM | #19 | |
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04-08-2021, 03:29 PM | #20 |
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As many have said, the 60 foot could be better. What does everybody think of the DA? OP said it was run once, so i'm not thinking a heat soak or pulled timing issue. Do you mind sharing which tune?
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04-08-2021, 06:19 PM | #21 | |
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Heat soak shouldn't have been an issue because I wasn't driving the car hard before that
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04-08-2021, 06:31 PM | #22 |
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Thanks. I never put any credence to dyno numbers as opposed to real world data. Good on you for doing a pull. That trap is concerning though. Getting out out to the drag strip, especially a prepped track, should let you know better where you're at. Good luck!
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