Still chasing poor running - Page 2 - ZR-1 Net Registry Forums

FormulaReed · 05-18-2023

I?ve kicked around the idea of sending it to Marc, but to be honest, my car is kind of a beater. I tried giving it to a shop here in the PNW but they couldn?t get it to skip a beat. When I picked it up, the owner commented that it ran really well? so I?m afraid that he?d get it and it would run great.

I did have Marc check out the ecm, and I?m not happy about spending the money for a good one, but I?d rather spend the money and just eliminate it as the culprit.

WARP TEN · 05-19-2023

Quote:

Originally Posted by FormulaReed

I?ve kicked around the idea of sending it to Marc, but to be honest, my car is kind of a beater. I tried giving it to a shop here in the PNW but they couldn?t get it to skip a beat. When I picked it up, the owner commented that it ran really well? so I?m afraid that he?d get it and it would run great.

I did have Marc check out the ecm, and I?m not happy about spending the money for a good one, but I?d rather spend the money and just eliminate it as the culprit.

I've seen quite a few "Beater" ZR-1s in Marc's shop over the years. Kind of like the rat rod concept. Rough on the outside, but reliable and running like a scalded cat. Some owners really don't care so much about how the car looks, just want it to run very well.When I first got my '95 in 2012 the first thing I did was send it to Marc for a thorough going over. It only had 19k miles but needed a lot of TLC. He found lots of things I never would have even thought to ask about. Ran perfectly after that for the years I owned it. Even more fun once I had Marc do his 510 HP package, but that is another story.....Bob

-=Jeff=- · 05-19-2023

you may be surprised on what Marc might find. Might be a good idea if the issue cannot be found.

FormulaReed · 05-28-2023

Update: I bought another ecm and installed it yesterday. Today, I drove the car for about an hour to an autocross, made 4 runs, and made it home. Car ran great the whole time.

It sure feels good. Made great power, not one hiccup. I ran it hard and it was hot. This was close to the same conditions that it failed in last time. It was hotter today, but it didn?t make 2 runs before failing and I barely made it home.

Cheers,

Reed

WARP TEN · 05-29-2023

Congratulations on getting it working right. I presume that when you said it didn't make 2 runs before failing and you barely made it home that you were talking about the previous time, not with the new ecm. Anyway, hope you can continue to enjoy it. --Bob

05-18-2023	#11
FormulaReed Join Date: Jan 2019 Location: Seattle Posts: 62	Re: Still chasing poor running I?ve kicked around the idea of sending it to Marc, but to be honest, my car is kind of a beater. I tried giving it to a shop here in the PNW but they couldn?t get it to skip a beat. When I picked it up, the owner commented that it ran really well? so I?m afraid that he?d get it and it would run great. I did have Marc check out the ecm, and I?m not happy about spending the money for a good one, but I?d rather spend the money and just eliminate it as the culprit.

05-19-2023	#13
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,132	Re: Still chasing poor running you may be surprised on what Marc might find. Might be a good idea if the issue cannot be found. __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - 3" Magnaflow Bullet cats - LT4 Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

05-28-2023	#14
FormulaReed Join Date: Jan 2019 Location: Seattle Posts: 62	Re: Still chasing poor running Update: I bought another ecm and installed it yesterday. Today, I drove the car for about an hour to an autocross, made 4 runs, and made it home. Car ran great the whole time. It sure feels good. Made great power, not one hiccup. I ran it hard and it was hot. This was close to the same conditions that it failed in last time. It was hotter today, but it didn?t make 2 runs before failing and I barely made it home. Cheers, Reed

05-29-2023	#15
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,035	Re: Still chasing poor running Congratulations on getting it working right. I presume that when you said it didn't make 2 runs before failing and you barely made it home that you were talking about the previous time, not with the new ecm. Anyway, hope you can continue to enjoy it. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough"