Hey guys, so I went up to the strip with Nitto NT555R's. Only got in 3 runs. Had a terrible night, very very dissapointed. Had the Nittos at 27psi, launched at 2,500rpm and kind of feathered it.
Best 60 foot 2.42 I think I feathered the clutch way to long. So obviously need to improve on that.
Also, back in April when I had my Magnaflow with BBK o/r X I was trapping at high 103 low 104, last night was pretty cool out about 60 degrees and with the o/r Prochamber and SLP c/b my trap speed was only 101.8
Is it because the car needs a dyno tune? Did the BBK o/r X make that much of a differance over a Mac o/r Prochamber? MAF possibly dirty? Maybe a leak on the Intake side? Anyhelp is very appriciated, I was really dissapointed on my times, my best run was a 14.2 @ 101.83 with a 2.42 60foot Thanks for any help guys - Shaun
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2003 Mustang GT Redfire 1/4 Mile - 13.408 @ 103.10mph | 60 Foot - 1.934 261rwhp & 284rwtq Tuned by Mike Dez @ Dez Racing
4.10's, SLP LM 1 Catback, Mac o/r Prochamber, K&N FIPK II CAI(painted red), MAC 70mm TB, C&L Plenum, Diablo Predator Tune, B&M Short Throw Shifter, Mach 1 Chin Spoiler, Mach 1 Grill Delete Next Mods - Saving for a Procharger :)
Yea I know I can get my 60 foot down. But Im more so worried about my Trap speed, not even my ET. Ive ran a 13.69 @ 104.26 with a o/r X pipe. Now after the Prochamber I only got a 14.2 (due to me not getting even a halfway decent launch @ only 101.8. Maybe because it was cooler air out in April?
Im getting a dyno tune this weekend. But before I go, Im checking for leaks, cleaning the MAF and what not.
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2003 Mustang GT Redfire 1/4 Mile - 13.408 @ 103.10mph | 60 Foot - 1.934 261rwhp & 284rwtq Tuned by Mike Dez @ Dez Racing
4.10's, SLP LM 1 Catback, Mac o/r Prochamber, K&N FIPK II CAI(painted red), MAC 70mm TB, C&L Plenum, Diablo Predator Tune, B&M Short Throw Shifter, Mach 1 Chin Spoiler, Mach 1 Grill Delete Next Mods - Saving for a Procharger :)
Yea I know I can get my 60 foot down. But Im more so worried about my Trap speed, not even my ET. Ive ran a 13.69 @ 104.26 with a o/r X pipe. Now after the Prochamber I only got a 14.2 (due to me not getting even a halfway decent launch @ only 101.8. Maybe because it was cooler air out in April?
Im getting a dyno tune this weekend. But before I go, Im checking for leaks, cleaning the MAF and what not.
Funny you say that- good friend of mine down here in Jersey is from Connecticut & he says that all the time
Hey guys, so I went up to the strip with Nitto NT555R's. Only got in 3 runs. Had a terrible night, very very dissapointed. Had the Nittos at 27psi, launched at 2,500rpm and kind of feathered it.
Best 60 foot 2.42 I think I feathered the clutch way to long. So obviously need to improve on that.
Also, back in April when I had my Magnaflow with BBK o/r X I was trapping at high 103 low 104, last night was pretty cool out about 60 degrees and with the o/r Prochamber and SLP c/b my trap speed was only 101.8
Is it because the car needs a dyno tune? Did the BBK o/r X make that much of a differance over a Mac o/r Prochamber? MAF possibly dirty? Maybe a leak on the Intake side? Anyhelp is very appriciated, I was really dissapointed on my times, my best run was a 14.2 @ 101.83 with a 2.42 60foot Thanks for any help guys - Shaun
I have the 555R's on the '01. You need to heat the crap out of them or they will not hook. I run 16psi in mine, and adjust from there according to track conditions.
This reminds me of a little thing that's bugging me- You would not believe how many people I see spinning their drag radials and complaining about traction... I go take a look and they're running with 25-30psi in them!! If 25-30psi works for you and you get traction, fine. But if it's not working why not lower the pressure? I don't get it. Is there some kind of manufacturer's recommendation somewhere that says you have to keep them at a certain psi? Is it lack of direction from the guys selling them the tires?
Is there some kind of manufacturer's recommendation somewhere that says you have to keep them at a certain psi? Is it lack of direction from the guys selling them the tires?
yes there is a manufacturer's recommendations.....
But that is based on pressure that will dictate tire wear & safety (IE warranty & liability)....
The recommendations are not based on getting the best traction for race conditions......
Quote:
Originally Posted by kilog55
i think its the fact people buy the DR's cause they think they can run faster and dont know anything about the tire itself.
That is a very true statement......
People have this bad habit of believing everything they read....
It sort like when they add just and intake to a basically stock motor and thing they are going to get 40-50 extra HP......
Finding the right tire pressure is a delicate balance there is no magic number that will work for every car.....
There are just too many variables .......
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Reggie
Real Racers Don't Street Race
PERIOD.......
'88 LX Hatch With A Little Of This & A Little Of That...... 10.39 @128 MPH Soon to be faster....
I have the 555R's on the '01. You need to heat the crap out of them or they will not hook. I run 16psi in mine, and adjust from there according to track conditions.
+1 I run mine at 15, but you have to do a good burnout to get them going. There are many variables but just from doing a decent burnout(my differential bushings were shot before) I picked up a little over a tenth on my 60 ft.
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93 LX 2.3 to 5.0 conversion. 60% of the time it works every time.
VTEC - All the lag of a turbo............None of the boost
If its Fast and reliable, it ain't cheap.
If its Cheap and reliable, it ain't fast.
If its Fast and cheap, it ain't reliable.
Quick question. Do you know what the atmospheric conditions were? This cud account for the lower mph. You're mph shouldn't be effect that much by sub par launches. If the air isn't as good... Think about it, the pros check this every round.
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‘88 LX Hatchback: 351 stroked to 408 w/4 bolt mains & steel crank, 12.5 :1 forged pistons, Cartech “Bread Box” upper/Edelbrock lower(ported and polished), BBK 75 mm Mass Air w/120 lb injectors, Dart II ported, polished O-ringed 2.02/1.60 heads, Custom Competition Cam hydraulic roller w/Roads lifters, Hypertech custom chip, 1100 hp Aeromotive Competition fuel kit, 9” w/ 4.86’s, Tremec T56 six speed, , Hotchkis performance suspension, 400 shot of nitrous. Passes emissions running E85.
Quick question. Do you know what the atmospheric conditions were? This cud account for the lower mph. You're mph shouldn't be effect that much by sub par launches. If the air isn't as good... Think about it, the pros check this every round.
True -he only dropped by 2 mph so I don't see any cause for alarm there- 2-3mph could easily be attributed to atmospheric conditions- I think if he fixes the launch probs the et's and mph's will line up. So start the tires out at about 20psi, heat 'em up really well, then stage - then let out 1-2psi each run until you get the sweet spot.
Quick question. Do you know what the atmospheric conditions were? This cud account for the lower mph. You're mph shouldn't be effect that much by sub par launches. If the air isn't as good... Think about it, the pros check this every round.
I was looking on wunderground.com. The night i ran 13.69 at 104.29 it was an average of 48* and the baro pressure was higher. This past night, the average was like 62* and baro pressure was lower.
Ive heard the higher the baro pressure, the quicker the car will run.
Thanks for all the help guys. Im going to get a dyno tune this weekend. I have a feeling its way out of tune. And Im going to just do a quick run through on the car. Make sure theres no leaks or anything. Thanks again guys.
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2003 Mustang GT Redfire 1/4 Mile - 13.408 @ 103.10mph | 60 Foot - 1.934 261rwhp & 284rwtq Tuned by Mike Dez @ Dez Racing
4.10's, SLP LM 1 Catback, Mac o/r Prochamber, K&N FIPK II CAI(painted red), MAC 70mm TB, C&L Plenum, Diablo Predator Tune, B&M Short Throw Shifter, Mach 1 Chin Spoiler, Mach 1 Grill Delete Next Mods - Saving for a Procharger :)
I'll make a third for the MTs... the Nittos are great for well, driving on the street and messing around if your'e into that... but as far as traction goes at the track, they are junk, no better then a street tire...
Those MTs will hook up and those 60s will come down... won't be too suprised if the MPH comes down with it, but then overall ET will be much better.
MTs..a set of Hoosiers maybe even a set of M&H tires...
Went to the Strip...ughhhh help anyone? 
I think I feathered the clutch way to long. So obviously need to improve on that. 
Thanks for any help guys - Shaun
