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Discussion Starter · #1 ·
My car has not been the same since I installed Venom 400(I'm going to start calling her Christine). I'm bringing my car in this Saturday to be fixed. I suspect the problem is with my ecu and I'm not sure how much a new one will cost... for a 94 Coupe L.

Also I'm not sure if I'd be better off paying the core charge and getting a stage II chip from Bayou or even the one Gary is selling.

I'm just trying to get a feel for my options.

Thanks in advance for your help!
 

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well did you take the venom 400 out? not just turning it off but completely taking it off the car. ive seen quite a few ECU's on ebay go for around $60... so its either that or you can get a stage2 chip for $300. its your call :)



-brandon
 

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Discussion Starter · #3 ·
No I haven't taken it out yet. With it on my car is almost normal. I'm using it to get by until Saturday.

I did test my car by removing all of it's connections though.

I'm wondering how much with a dealer charge for a new ecu?
 

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LiasLegend said:
No I haven't taken it out yet. With it on my car is almost normal. I'm using it to get by until Saturday.

I did test my car by removing all of it's connections though.

I'm wondering how much with a dealer charge for a new ecu?
well are you that bent on using the venom 400? does it really give you that much performance? if i were you id just take the whole thing out and say screw it. a new ecu will probably cost you ALOT from the dealer, so id just try and get it used.

-brandon
 

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Discussion Starter · #5 ·
Darkstar said:


well are you that bent on using the venom 400? does it really give you that much performance? if i were you id just take the whole thing out and say screw it. a new ecu will probably cost you ALOT from the dealer, so id just try and get it used.

-brandon
No, I'm not saying that at all. I won't use Venom after my car is fixed. However I have little choice until that happens. When Venom is turned off my car stalls constantly and struggles to get up to 40. When it's on my car is almost normal.

You're probably right... I'm sure it will cost a lot from the dealer. At this point it might be worth it to have my car back in working order this Saturday versus waiting a few weeks or even longer for one to appear on ebay.

I was hoping someone might know the price of the top of there heads but I'll just give my dealer a call tomorrow and ask.
 

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LiasLegend said:


No, I'm not saying that at all. I won't use Venom after my car is fixed. However I have little choice until that happens. When Venom is turned off my car stalls constantly and struggles to get up to 40. When it's on my car is almost normal.

You're probably right... I'm sure it will cost a lot from the dealer. At this point it might be worth it to have my car back in working order this Saturday versus waiting a few weeks or even longer for one to appear on ebay.

I was hoping someone might know the price of the top of there heads but I'll just give my dealer a call tomorrow and ask.
well did you take the venom off completely? i know someone was mentioning something along the lines of if you leave the car idling for like 20mins the ECU will reset itself and the venom will work fine. i dont know EXACTLY what it said but it was something like that. have you tried calling venom? they might know of a way to fix the problem. you might also try contacting Bayou and see if they will sell you an original ecu.

-brandon
 

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Discussion Starter · #7 ·
Darkstar said:


well did you take the venom off completely? i know someone was mentioning something along the lines of if you leave the car idling for like 20mins the ECU will reset itself and the venom will work fine. i dont know EXACTLY what it said but it was something like that. have you tried calling venom? they might know of a way to fix the problem. you might also try contacting Bayou and see if they will sell you an original ecu.

-brandon
Yes, I did disconnect venom. I did try what ChrisK and Ben Hedrington suggested.

I haven't called Venom yet. At this point it couldn't hurt.
 

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Your probably be looking at around few hundred $$$$. When i was scrummaging thru the junkyard for an ABS sensor, i'd ask how much for type I ECU and he quoted me about $180, USED... so I said forget that.
 

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I personally don't think it is your ECU, but probabaly either the Venom 400, the connections, or posibly the MAP sensor. I would do what others suggested and totally remove the Venom, not just turn it off. For this part, it is a simple as disconnecting it from the TPS and MAP sensor wires. Then reset the ECU again as see what happens. While it is conceivable that your ECU just happend to go bad after installing the Venom, the Venom itself would not be a likely cause of the ECU failure, unless the Venom 400 module itself was malfunctioning and bad. All the Venom 400 does is vary the input volatage from the MAP to the ECU, but within the OEM range of 0V to 5V.

As for used ECUs, I would check all the online salvage sites, as the usually have a couple of G2 ECUs for less than $200.

Be sure to get the one for your car. In other words, you can use the same ECU for the 91-95 L and LS Sedans. The 91-92 Coupes use the same ECU. The 93-95 LS Coupes use the same. The 93-95 L Coupes. The 94-95 GS Sedan, and so forth.
 

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Discussion Starter · #11 ·
ChrisK - I must not be saying this correctly but I did disconnect Venom completely from my car and reset the ECU but the results did not change. Which is why Venom is still located in my car. If it worked then I would have taken the last step to completely uninstalling Venom and removed the magic box.

I do appreciate everyone's help and I guess I'll wait until Saturday to find out what exactly is wrong. I just wanted to get some costs together for a worst/best case scenario.
 

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LiasLegend said:
ChrisK - I must not be saying this correctly but I did disconnect Venom completely from my car and reset the ECU but the results did not change. Which is why Venom is still located in my car. If it worked then I would have taken the last step to completely uninstalling Venom and removed the magic box.

Oops, sorry. I must have not been reading correctly. But anyway, check the online salvage places for the ECU as it will be much cheaper. Do you know anyone with a Legend in your area? mayeb you can do a swap to see if it fixes your problem.
 
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