New chip

[HOTSIX]

Lil' confused here guys. I am buying some used blue tops for my 85 hotair car.

When doing the inj change - your chip has to match them right ?

I am gonna change over to the 87 ECM so when I get the ECM what do I need ???

Will a used ECM come with chips (PROM + chip) in it (usually) ? What do I need as far as chips go....

I know there is the PROM and then a performance chip will go in it. Right ? SO i'm best to order a performance chip then when I receive the ECM all I gotta do is put the performance chip it 'cause a PROM should already be in there.

 

[JayC]

Originally posted by HOTSIX
Lil' confused here guys. I am buying some used blue tops for my 85 hotair car.

When doing the inj change - your chip has to match them right ?

Yes

I am gonna change over to the 87 ECM so when I get the ECM what do I need ???

Preferably an 87 MAF and a MAT sensor[

Will a used ECM come with chips (PROM + chip) in it (usually) ? What do I need as far as chips go....

You need a street (or race) chip for 36# injectors. Preferably something custom to make up for your lack of intercooler.

 

[HOTSIX]

Thanks Jay.

So ususally a used ECM will come with the PROM in it already right ? An d its ok to use that PROM on my 85 motor provided i've got the 87 MAF and MAT ?

 

[JayC]

Yes and no

Will it run, yes.

Will it run well, no.

Plus the stock chip is for 28# injectors, not 36s. Not to mention that the stock chip has WAY too much timing for your application.

 

[HOTSIX]

Think i'm confusing the PROM with the street or performance chip.

They are not the same thing ?

There 2 'chips' in an ECM right ?

One you can replace with a performance chip and the other you cannot.....

What I wanna know is what do you do to make the car run right (ECM wise) after you get the ECM installed with MAF and MAT ?
Think I meant to say calpack.

 

[JayC]

Put in a chip done for your setup. Thats about it.

 

[HOTSIX]

Thanks Jay.

Guess I was complicating matters for myself there.