Timing in the 60' Launch
#21
Originally Posted by Crash Dummy
Also being able to hold the gas pedal on the floor and release the brake on the green made it real consistent
Originally Posted by me
Is this the same concept on the jap cars, my buds wrx, his tuner set it up so he can floor it at the gate, it won't go over 4500rpm, but not like a rev limiter. It doesn't bounce. Then when he takes off, beautiful 60'.
#24
Originally Posted by BlownChevy
never a secret, I have mentioned it several times.....just went un noticed.
Curious what's crash's take on the correction table and how it would be open for possible problmes, or anybody's for that matter.
#25
TECH Veteran
It seems to me that if you were going for a program to assist you in traction control you'd simply program the throttle blade to not open 100% at wide open under that area. Essentially what you're doing is the same as a two step which is just heating up the blower and the trans by doing wide open at the line as well as pre-loading the suspension which creates less weight transfer on the launch. If you went off idle you'd get much more weight transfer and with a little programming you could control the throttle blade opening. Honestly if you are experiencing a traction problem on a 13 second truck you need to work on the suspension some and chose a different tire. Another issue with reducing the timing down low and lauching it at wide open is that you're going to be fouling the plugs while sitting at the line and having to clear them up as you get rolling. Pulling a 1.9 60' time on something as heavy as a crew cab with the low end created by the radix shouldn't be all that hard. With some work 1.8's should be attainable.
#26
what a rush!
iTrader: (8)
Originally Posted by zippy
It seems to me that if you were going for a program to assist you in traction control you'd simply program the throttle blade to not open 100% at wide open under that area. Essentially what you're doing is the same as a two step which is just heating up the blower and the trans by doing wide open at the line as well as pre-loading the suspension which creates less weight transfer on the launch. If you went off idle you'd get much more weight transfer and with a little programming you could control the throttle blade opening. Honestly if you are experiencing a traction problem on a 13 second truck you need to work on the suspension some and chose a different tire. Another issue with reducing the timing down low and lauching it at wide open is that you're going to be fouling the plugs while sitting at the line and having to clear them up as you get rolling. Pulling a 1.9 60' time on something as heavy as a crew cab with the low end created by the radix shouldn't be all that hard. With some work 1.8's should be attainable.
#27
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Originally Posted by zippy
It seems to me that if you were going for a program to assist you in traction control you'd simply program the throttle blade to not open 100% at wide open under that area. Essentially what you're doing is the same as a two step which is just heating up the blower and the trans by doing wide open at the line as well as pre-loading the suspension which creates less weight transfer on the launch. If you went off idle you'd get much more weight transfer and with a little programming you could control the throttle blade opening. Honestly if you are experiencing a traction problem on a 13 second truck you need to work on the suspension some and chose a different tire. Another issue with reducing the timing down low and launching it at wide open is that you're going to be fouling the plugs while sitting at the line and having to clear them up as you get rolling. Pulling a 1.9 60' time on something as heavy as a crew cab with the low end created by the radix shouldn't be all that hard. With some work 1.8's should be attainable.
#28
blownerator
iTrader: (20)
Originally Posted by zippy
Honestly if you are experiencing a traction problem on a 13 second truck you need to work on the suspension some and chose a different tire.
Zippy, you come off a bit arrogant about this.....I dont understand why, I have seen the calibrations from some of the trucks you have tuned, and quite frankly myself and others that have seen them about fell out of their chair. So before you start knocking on the door of someone that just might know what he is talking about, you might want to think twice.
#29
TECH Veteran
Arrogant??? I made one post on the topic. I never claimed to be the best nor will I. If the guys are laughing and falling out of their chair I'd be willing to hear what they find so amusing. On a regular basis I have to fix work of other tuners that have Radix trucks for example with the PE coming in at 90%, untouched V.E. tables, spark tables that look like they just want blocks of numbers, untouched part throttle trans tuning, line pressure tables that they guessed on, shift timing that is nothing more than a solid number. So, I have the time, go into my programming and tell me where you fell out of your chair. This should be good.
I don't get the fuel injected part. You can foul plugs on an injected engine just as you can a carburated engine. Once you're wide open there is no closed loop so it's not going to correct the a/f ratio for you. If you ran a 28/12.50 tire and couldn't improve your 60' time, there is a problem. I've had customers pull 1.8 and 1.9 60' times in pickups with tires that have a 400+ treadwear rating. Another friend with a procharged and bagged truck pulled a 1.7 60' time on a 235/60R15 with full timing. One of my customers with an S10 extended cab was able to get into the 1.8 60' area with 215/65R15's that he paid $42 a piece for. I don't get where I come off as an expert. I again posted one time in here. I never doubted your abilities. I have no reason to. If you've been doing performance work for 35 years, congrats. I don't know how that relates to the topic. I'm not sure where I haven't ridden in a properly tuned Radix truck. I've tuned more than enough of them to run times that suprised people and with very good 60' times even in trucks with centrifugal superchargers.
Honestly guys, if you see me taking a shot at anyone here, I'd like to know where it is. Someone else brought up the programming of the IAT. My comment here was simply that there are better ways to get the 60' time than taking all of the timing away.
I don't get the fuel injected part. You can foul plugs on an injected engine just as you can a carburated engine. Once you're wide open there is no closed loop so it's not going to correct the a/f ratio for you. If you ran a 28/12.50 tire and couldn't improve your 60' time, there is a problem. I've had customers pull 1.8 and 1.9 60' times in pickups with tires that have a 400+ treadwear rating. Another friend with a procharged and bagged truck pulled a 1.7 60' time on a 235/60R15 with full timing. One of my customers with an S10 extended cab was able to get into the 1.8 60' area with 215/65R15's that he paid $42 a piece for. I don't get where I come off as an expert. I again posted one time in here. I never doubted your abilities. I have no reason to. If you've been doing performance work for 35 years, congrats. I don't know how that relates to the topic. I'm not sure where I haven't ridden in a properly tuned Radix truck. I've tuned more than enough of them to run times that suprised people and with very good 60' times even in trucks with centrifugal superchargers.
Honestly guys, if you see me taking a shot at anyone here, I'd like to know where it is. Someone else brought up the programming of the IAT. My comment here was simply that there are better ways to get the 60' time than taking all of the timing away.
#30
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Join Date: Jan 2005
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Originally Posted by zippy
Arrogant??? I made one post on the topic. I never claimed to be the best nor will I. If the guys are laughing and falling out of their chair I'd be willing to hear what they find so amusing. On a regular basis I have to fix work of other tuners that have Radix trucks for example with the PE coming in at 90%, untouched V.E. tables, spark tables that look like they just want blocks of numbers, untouched part throttle trans tuning, line pressure tables that they guessed on, shift timing that is nothing more than a solid number. So, I have the time, go into my programming and tell me where you fell out of your chair. This should be good.
I don't get the fuel injected part. You can foul plugs on an injected engine just as you can a carburated engine. Once you're wide open there is no closed loop so it's not going to correct the a/f ratio for you. If you ran a 28/12.50 tire and couldn't improve your 60' time, there is a problem. I've had customers pull 1.8 and 1.9 60' times in pickups with tires that have a 400+ treadwear rating. Another friend with a procharged and bagged truck pulled a 1.7 60' time on a 235/60R15 with full timing. One of my customers with an S10 extended cab was able to get into the 1.8 60' area with 215/65R15's that he paid $42 a piece for. I don't get where I come off as an expert. I again posted one time in here. I never doubted your abilities. I have no reason to. If you've been doing performance work for 35 years, congrats. I don't know how that relates to the topic. I'm not sure where I haven't ridden in a properly tuned Radix truck. I've tuned more than enough of them to run times that surprised people and with very good 60' times even in trucks with centrifugal superchargers.
Honestly guys, if you see me taking a shot at anyone here, I'd like to know where it is. Someone else brought up the programming of the IAT. My comment here was simply that there are better ways to get the 60' time than taking all of the timing away.
I don't get the fuel injected part. You can foul plugs on an injected engine just as you can a carburated engine. Once you're wide open there is no closed loop so it's not going to correct the a/f ratio for you. If you ran a 28/12.50 tire and couldn't improve your 60' time, there is a problem. I've had customers pull 1.8 and 1.9 60' times in pickups with tires that have a 400+ treadwear rating. Another friend with a procharged and bagged truck pulled a 1.7 60' time on a 235/60R15 with full timing. One of my customers with an S10 extended cab was able to get into the 1.8 60' area with 215/65R15's that he paid $42 a piece for. I don't get where I come off as an expert. I again posted one time in here. I never doubted your abilities. I have no reason to. If you've been doing performance work for 35 years, congrats. I don't know how that relates to the topic. I'm not sure where I haven't ridden in a properly tuned Radix truck. I've tuned more than enough of them to run times that surprised people and with very good 60' times even in trucks with centrifugal superchargers.
Honestly guys, if you see me taking a shot at anyone here, I'd like to know where it is. Someone else brought up the programming of the IAT. My comment here was simply that there are better ways to get the 60' time than taking all of the timing away.