Track results at GLD - ZR-1 Net Registry Forums

LGAFF · 09-07-2009

Ran up to GLD:

First run hit the rev limiter: 12.55 @ 117.55: 1/8 mile 8.23
Second run did a burnout through 1st. gear, 2.4 60ft and ran 13.57 @ 116.26
Third run spun the wheels but hit 12.68 @ 117.43 1/8 mile 8.36 @ 89.81.

My last two runs saw a significant drop in MPH 12.7 @ 113.6 and then last run was a 114.3 at 12.8. Not sure what happened. Even in the 113.6 I ran a 8.33 1/8 mile. The car seemed to lose the back end power. The only thing I did was pull the chip and tried to put a moates adapter on it to run another program. I could not get it to work, so I put the stocker back in....no SES lights.

Ran on Sumitumos, they were not bad, I could launch at about 1800 without spinning them.

Put my time in the DA calculator, I think its wishfull thinking, but here is what it spit out:

Stock and Mildly Modified Naturally Aspirated Engines
12.368 @ 119.442 MPH

Extensively Modified Naturally Aspirated Engines
12.465 @ 118.644 MPH

XfireZ51 · 09-07-2009

Let me suggest that you "drain" the ECM when swapping proms. Perhaps the SES light caused the ECM to throttle back even tho you replaced with original chip.

-=Jeff=- · 09-07-2009

I assume the 1992?

LGAFF · 09-07-2009

Yup the 92.

jonszr1 · 09-07-2009

nice runs ,especially with street tires

Ccmano · 09-07-2009

Largely due to operator error, best I could muster today was 114.21mph @ 13.235.

I simply could not launch the car properly. Either spinning the tires badly or (mostly) bogging on takeoff.

My best 60' time was a poor 2.304 on that same run.

Here's what the DA Calculator told me...

Stock and Mildly Modified Naturally Aspirated Engines
13.015 @ 116.182 MPH

I was running my Haibeck chip and forgot to bring the Cory Henderson chip with me. I suspect the Henderson chip would have been better as it takes out less timing.

Looks like I need launch lessons, any volunteers?
H

LGAFF · 09-07-2009

Hans,

I think you are running too rich. I ran a near stock 90 to 12.88 at 112.68, that car even has the same tires as yours. I think I could only muster a 113... in yours with a ported intake and headers. Something is off on the low end, and you are picking up big MPH after the 1/8th. I think your speed at the 8th mile is only about 83MPH.

I recently put a Haibeck chip in my 90 that was intended for a ported car. After driving it for awhile, I thought I had a miss or bad coil. Once I went back to the DRM chip this afternoon, no issues. I think maybe you should try a milder chip and see if that resolves some of the issues.

Obviously data logging would be the best thing to do.

Ccmano · 09-07-2009

My 1/8th mile mph was 84.7, still crappy. We'll see how the Henderson chip does.
H

09-07-2009	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Track results at GLD Ran up to GLD: First run hit the rev limiter: 12.55 @ 117.55: 1/8 mile 8.23 Second run did a burnout through 1st. gear, 2.4 60ft and ran 13.57 @ 116.26 Third run spun the wheels but hit 12.68 @ 117.43 1/8 mile 8.36 @ 89.81. My last two runs saw a significant drop in MPH 12.7 @ 113.6 and then last run was a 114.3 at 12.8. Not sure what happened. Even in the 113.6 I ran a 8.33 1/8 mile. The car seemed to lose the back end power. The only thing I did was pull the chip and tried to put a moates adapter on it to run another program. I could not get it to work, so I put the stocker back in....no SES lights. Ran on Sumitumos, they were not bad, I could launch at about 1800 without spinning them. Put my time in the DA calculator, I think its wishfull thinking, but here is what it spit out: Stock and Mildly Modified Naturally Aspirated Engines 12.368 @ 119.442 MPH Extensively Modified Naturally Aspirated Engines 12.465 @ 118.644 MPH __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 09-07-2009 at 05:36 PM.

09-07-2009	#2
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Track results at GLD Let me suggest that you "drain" the ECM when swapping proms. Perhaps the SES light caused the ECM to throttle back even tho you replaced with original chip.

09-07-2009	#3
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Track results at GLD I assume the 1992? __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

09-07-2009	#4
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Track results at GLD Yup the 92. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-07-2009	#5
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: Track results at GLD nice runs ,especially with street tires

09-07-2009	#6
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Track results at GLD Largely due to operator error, best I could muster today was 114.21mph @ 13.235. I simply could not launch the car properly. Either spinning the tires badly or (mostly) bogging on takeoff. My best 60' time was a poor 2.304 on that same run. Here's what the DA Calculator told me... Stock and Mildly Modified Naturally Aspirated Engines 13.015 @ 116.182 MPH I was running my Haibeck chip and forgot to bring the Cory Henderson chip with me. I suspect the Henderson chip would have been better as it takes out less timing. Looks like I need launch lessons, any volunteers? H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. Last edited by Ccmano; 09-07-2009 at 08:54 PM.

09-07-2009	#7
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Track results at GLD Hans, I think you are running too rich. I ran a near stock 90 to 12.88 at 112.68, that car even has the same tires as yours. I think I could only muster a 113... in yours with a ported intake and headers. Something is off on the low end, and you are picking up big MPH after the 1/8th. I think your speed at the 8th mile is only about 83MPH. I recently put a Haibeck chip in my 90 that was intended for a ported car. After driving it for awhile, I thought I had a miss or bad coil. Once I went back to the DRM chip this afternoon, no issues. I think maybe you should try a milder chip and see if that resolves some of the issues. Obviously data logging would be the best thing to do. __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

09-07-2009	#8
Ccmano Join Date: Jun 2006 Location: Sparks, NV Posts: 2,852	Re: Track results at GLD My 1/8th mile mph was 84.7, still crappy. We'll see how the Henderson chip does. H __________________ 90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold.

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