converting my 82 cross fire

[cinci5]

Where'd the rest of that article go? I thought it had a good description of actually balancing the TBs?

if you click on the pictures on right and left the rest will show up relating to pictures

 

[JohnGrawcock]

If your still running the original 82 ECM you might want to replace it even if it isn't bad. I think the replacements are running software closer to the 84 code. They provide better low end response and make better decisions on when to deactivate the torque converter clutch on deceleration.

 

[topless82vette]

I say repin the ecm harness and run a 7747 ecm made my cfi run alot better also get the water temp up on it that helped my idle considerably. The ecm upgrade is the best thing and will allow you to have a prom custom burned for the car. My CFI ran pretty strong after these mods and a TPI fuel pump.

 

[geekinavette]

I say repin the ecm harness and run a 7747 ecm made my cfi run alot better also get the water temp up on it that helped my idle considerably. The ecm upgrade is the best thing and will allow you to have a prom custom burned for the car. My CFI ran pretty strong after these mods and a TPI fuel pump.

You replaced the wiring harness connector?

 

[topless82vette]

You replaced the wiring harness connector?

When I did mine I had bought a adapter that plugged into my factory harness and plugged into the 7747 is all. I no longer have the car though. But, these 3 changes made my CFI run extremly well still not fast but driveability wise it was very nice verses stock.

 

[topless82vette]

When I did mine I had bought a adapter that plugged into my factory harness and plugged into the 7747 is all. I no longer have the car though. But, these 3 changes made my CFI run extremly well still not fast but driveability wise it was very nice verses stock.

The other mod to the car was running dual electric fans and keeping the car thermostatically controlled between 227 on 205 off this got rid of the CFI's poor idle sound and gave it a crisper idle sound. Maybe running the engine hotter kept fuel from puddling in the manifold not sure but the car after this work sounded more like a TPI car then a CFI car and always ran nice.

 

[geekinavette]

When I did mine I had bought a adapter that plugged into my factory harness and plugged into the 7747 is all. I no longer have the car though. But, these 3 changes made my CFI run extremly well still not fast but driveability wise it was very nice verses stock.

Where did you get that adapter?

 

[LT4man]

That article is the best one I have seen describing the idle procedure on a CFI.

I also like the suggestions from topless82vette.

topless: How was your fuel mileage after getting everything synchronized and running properly?

SAVE THE

 

[wishuwerehere82]

Where did you get that adapter?

I have seen this one from Turbo City. Basically an ECM swap out for a faster one. Repinning harness instructions included.
http://www.turbocity.com/product_info.php?products_id=455

 

[geekinavette]

Oh yeah I'm very familiar with that setup...WHAT a ripoff!

I don't think that's what he was referring to though... :confused

I was just wondering if he had one of these:

http://www.speedtronics.net/aboutham.asp

 

[wishuwerehere82]

Oh yeah I'm very familiar with that setup...WHAT a ripoff!

I don't think that's what he was referring to though... :confused

I was just wondering if he had one of these:

http://www.speedtronics.net/aboutham.asp

I haven't seen that one.

I put one of these on mine to cure the "bucking bronco" syndrome I had at high RPM's when I let off the throttle.
http://www.mamotorworks.com/corvette-4-0-858.html

 

[hotshotzny]

I haven't seen that one.

I put one of these on mine to cure the "bucking bronco" syndrome I had at high RPM's when I let off the throttle.
http://www.mamotorworks.com/corvette-4-0-858.html

did it actually do anything??

 

[geekinavette]

I haven't seen that one.

Well when it came time to do the ECM swap myself...I just could NOT see hacking up my harness, so I developed that. Works quite well!

I put one of these on mine to cure the "bucking bronco" syndrome I had at high RPM's when I let off the throttle.
http://www.mamotorworks.com/corvette-4-0-858.html

did it actually do anything??

If it does then it's only masking some other existing problem. That thing is nothing more than 10 cents worth of resistors (and apparently $60 worth of connectors :eyerole ) that make the ECM "think" it is at WOT when it actually isn't. Bad idea if you ask me.

 

[hotshotzny]

Well when it came time to do the ECM swap myself...I just could NOT see hacking up my harness, so I developed that. Works quite well!





If it does then it's only masking some other existing problem. That thing is nothing more than 10 cents worth of resistors (and apparently $60 worth of connectors :eyerole ) that make the ECM "think" it is at WOT when it actually isn't. Bad idea if you ask me.

agreed!

 

[wishuwerehere82]

Well when it came time to do the ECM swap myself...I just could NOT see hacking up my harness, so I developed that. Works quite well!





If it does then it's only masking some other existing problem. That thing is nothing more than 10 cents worth of resistors (and apparently $60 worth of connectors :eyerole ) that make the ECM "think" it is at WOT when it actually isn't. Bad idea if you ask me.

All I know is that it worked when I used it.
No amount of F/A curve matching, new sensors, complete rebuild would cure it. But that add on module did.

 

[topless82vette]

Oh yeah I'm very familiar with that setup...WHAT a ripoff!

I don't think that's what he was referring to though... :confused

I was just wondering if he had one of these:

http://www.speedtronics.net/aboutham.asp

Yes that is what my car had .... As for fuel mileage took it to san francisco once and it maintained about 25.5mpg at fillups.

 

[topless82vette]

Yes that is what my car had .... As for fuel mileage took it to san francisco once and it maintained about 25.5mpg at fillups.

One thing I did want to add though is don't use a camaro 8746 ecm. because of two reasons one being VATS and the second being the 8746 requires IAT sensor input and to do so you need to run extra wires to the air cleaner. Without this the 8746 will keep the car always wanting to idle high. 7747 doesn't require this input though

 

[geekinavette]

One thing I did want to add though is don't use a camaro 8746 ecm. because of two reasons one being VATS and the second being the 8746 requires IAT sensor input and to do so you need to run extra wires to the air cleaner. Without this the 8746 will keep the car always wanting to idle high. 7747 doesn't require this input though

Ahh I must have you in my database somewhere then!

VATS is easily disabled...and it is not difficult at all to install a IAT sensor. The disadvantage to the 7747 is that it does not provide controls for AIR or Canister Purge functions (needed in some areas to meet emissions requirements).