1/4 mile trap speed help!
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Instructor
Joined: Apr 2015
Posts: 112
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1/4 mile trap speed help!
Ive got a 2014 stingray with long tubes high flow cats a bb exhaust with aa supercharger dynoed at 600 rwhp....took it to the track 2 weekends in a row and my best time was 12.2 at 117mph, ive got a friend with same mods puttingdown the same trap speeds, both cars were tuned thru a&a corvette, were located in kansas with 1500 above sea level, id expect way more top end speed with that much power at least mid 120's, what could b my problem, ive got new 5.0 mustang's trapping same speeds as me and there stock, help please!
Safety Car
Joined: Jun 2000
Posts: 4,685
Likes: 78
From: Winter Garden (central),FL,USA
Ive got a 2014 stingray with long tubes high flow cats a bb exhaust with aa supercharger dynoed at 600 rwhp....took it to the track 2 weekends in a row and my best time was 12.2 at 117mph, ive got a friend with same mods puttingdown the same trap speeds, both cars were tuned thru a&a corvette, were located in kansas with 1500 above sea level, id expect way more top end speed with that much power at least mid 120's, what could b my problem, ive got new 5.0 mustang's trapping same speeds as me and there stock, help please!
Safety Car
Joined: Jun 2000
Posts: 4,685
Likes: 78
From: Winter Garden (central),FL,USA
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
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Instructor
Joined: Jan 2012
Posts: 132
Likes: 10
From: Hutchinson KS
I'm the other one. Mine went 12.8 stock @110. Ran this weekend and went 12.5 @119. Lots of wheel spin and bad driving on my part. Ran in sport mode with traction control on. I was expecting more trap speed too. I need more practice and stickier tires. My dyno numbers were 419 stock and 565 after blower install. Feel free to make fun of me...I'm slow
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Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
That's why I am not a fan of dyno tuning---All they shoot for is MAX HP at 6000-6500 RPM's and usually don't address any issues that affect drivability launch or TQ management----Are your cars 7 speeds or 8 speed autos?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
Instructor
Joined: Jan 2012
Posts: 132
Likes: 10
From: Hutchinson KS
That's why I am not a fan of dyno tuning---All they shoot for is MAX HP at 6000-6500 RPM's and usually don't address any issues that affect drivability launch or TQ management----Are your cars 7 speeds or 8 speed autos?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
That's why I am not a fan of dyno tuning---All they shoot for is MAX HP at 6000-6500 RPM's and usually don't address any issues that affect drivability launch or TQ management----Are your cars 7 speeds or 8 speed autos?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
That's why I am not a fan of dyno tuning---All they shoot for is MAX HP at 6000-6500 RPM's and usually don't address any issues that affect drivability launch or TQ management----Are your cars 7 speeds or 8 speed autos?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
--- are you getting wheel spin in 2nd and 3rd gear ??
Both your cars have extreme HP and should be ***** fast--so something is not right--
Do they seem to run fine driving just normally ? no SC issues rearing it's head ?
If not points almost exclusively to a TQ management TQ response problem---
How much boost are you getting ?
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
Without drag radials wheel spin in un avoidable----however you have so much HP that you should still have better times because after it hooks up the HP is off the chart--- and you should still be in the low 11's
ET's are an indication of driver experience and the ability to launch at the edge of tire spin-----however trap MPH is an indication of pure HP---With your low traps speeds I would only assume you are not getting anywhere near your dynoed 600 RWHP-----
A 400 RWHP corvette should run in the low 12's or high 11's---Regardless of wheel spin
At 600 RWHP your trap speed should indicate top end HP and should be in the low 11's or high 12's--even with stock tires !!!!!!!!--- and should trap around 120 MPH+
Something is limiting or holding back the engines TQ and HP---Sounds more and more like a tuning issue-- seems like your tuner missed a few tables--even with the TC ON a proper tune should never limit top end HP--above 4000 RPM----Either the TQ control #'s are too low or the TQ Response #'s are as well---These E92 DI engines are tuned like never before---If the #'s are too low in the above mentioned tables doesn't matter how much HP your engine cam make---the ECM will always limit it to those max parameters in your tune---
Did your tuner use HP tuners or EFILIVE ??
If they used EFILIVE send me a copy of your tune file and I will sort it out for you
ET's are an indication of driver experience and the ability to launch at the edge of tire spin-----however trap MPH is an indication of pure HP---With your low traps speeds I would only assume you are not getting anywhere near your dynoed 600 RWHP-----
A 400 RWHP corvette should run in the low 12's or high 11's---Regardless of wheel spin
At 600 RWHP your trap speed should indicate top end HP and should be in the low 11's or high 12's--even with stock tires !!!!!!!!--- and should trap around 120 MPH+
Something is limiting or holding back the engines TQ and HP---Sounds more and more like a tuning issue-- seems like your tuner missed a few tables--even with the TC ON a proper tune should never limit top end HP--above 4000 RPM----Either the TQ control #'s are too low or the TQ Response #'s are as well---These E92 DI engines are tuned like never before---If the #'s are too low in the above mentioned tables doesn't matter how much HP your engine cam make---the ECM will always limit it to those max parameters in your tune---
Did your tuner use HP tuners or EFILIVE ??
If they used EFILIVE send me a copy of your tune file and I will sort it out for you
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
Without drag radials wheel spin in un avoidable----however you have so much HP that you should still have better times because after it hooks up the HP is off the chart--- and you should still be in the low 11's
ET's are an indication of driver experience and the ability to launch at the edge of tire spin-----however trap MPH is an indication of pure HP---With your low traps speeds I would only assume you are not getting anywhere near your dynoed 600 RWHP-----
A 400 RWHP corvette should run in the low 12's or high 11's---Regardless of wheel spin
At 600 RWHP your trap speed should indicate top end HP and should be in the low 11's or high 12's--even with stock tires !!!!!!!!--- and should trap around 120 MPH+
Something is limiting or holding back the engines TQ and HP---Sounds more and more like a tuning issue-- seems like your tuner missed a few tables--even with the TC ON a proper tune should never limit top end HP--above 4000 RPM----Either the TQ control #'s are too low or the TQ Response #'s are as well---These E92 DI engines are tuned like never before---If the #'s are too low in the above mentioned tables doesn't matter how much HP your engine cam make---the ECM will always limit it to those max parameters in your tune---
Did your tuner use HP tuners or EFILIVE ??
If they used EFILIVE send me a copy of your tune file and I will sort it out for you
ET's are an indication of driver experience and the ability to launch at the edge of tire spin-----however trap MPH is an indication of pure HP---With your low traps speeds I would only assume you are not getting anywhere near your dynoed 600 RWHP-----
A 400 RWHP corvette should run in the low 12's or high 11's---Regardless of wheel spin
At 600 RWHP your trap speed should indicate top end HP and should be in the low 11's or high 12's--even with stock tires !!!!!!!!--- and should trap around 120 MPH+
Something is limiting or holding back the engines TQ and HP---Sounds more and more like a tuning issue-- seems like your tuner missed a few tables--even with the TC ON a proper tune should never limit top end HP--above 4000 RPM----Either the TQ control #'s are too low or the TQ Response #'s are as well---These E92 DI engines are tuned like never before---If the #'s are too low in the above mentioned tables doesn't matter how much HP your engine cam make---the ECM will always limit it to those max parameters in your tune---
Did your tuner use HP tuners or EFILIVE ??
If they used EFILIVE send me a copy of your tune file and I will sort it out for you
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
Thread Starter
Instructor
Joined: Apr 2015
Posts: 112
Likes: 2
Giving the car full throttle from second thru 4 gear, a vette with 600 rwhp should blow the tires off thru second gear easy with street tires and mine will not
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