So who wants their ECU's "Chromed"?

[3krazygt]

The MAF is scaled just like every other sensor on the car. If you use the TT scaling that will cause your trims to go out of whack. I don't remember if Jeff or Ceddys basic NA disassembles have those tables or not. I can find them if need be.

Using a TT MAF will correct the size and adder value but the scaling will still be off because the intake setups are completely different on an NA vs TT.

I get what you are saying. The car is completely stock, and my main goal was to make my ECU behave exactly as a Fed Spec ECU would.

Is there a known scaling factor between the two?

[Greg E]

I'll have to look at an NA ROM. You can literally just copy/paste those values into the chrome ROM.

[3krazygt]

I'll have to look at an NA ROM. You can literally just copy/paste those values into the chrome ROM.

Oh I understand now. I thought the TT scaling and NA scaling may have been referenced differently. But it seems they are referenced the same. So the scaling is just a matter of a number. In other words scaling "X" on TT is the same as scaling "X" on NA. But stock, TT might be "3X" and NA might be "2X". But regardless they are both referenced to X

Let me know if I've understood this correctly

[Greg E]

You're telling the code that X voltage means Y amount of air.

[3000gttom]

Oh I understand now. I thought the TT scaling and NA scaling may have been referenced differently. But it seems they are referenced the same. So the scaling is just a matter of a number. In other words scaling "X" on TT is the same as scaling "X" on NA. But stock, TT might be "3X" and NA might be "2X". But regardless they are both referenced to X

Let me know if I've understood this correctly

if you use the rom i emailed you then you dont need to rescale anything, (assuming the 95 maf is the same as my 99 n/a maf)

if you use his rom, you will lose the intake control

[3000gttom]

That's not entirely true.

The fuel table is scary accurate on a stock car with stock MAF but I wouldn't ever try tuning a car without the wideband.

i would understand the concern on a turbo car, but the air going into an n/a is very consistent and does not see the temp changes that a turbo has

my wideband very rarely reads more than 0.2 of an AFR point different from the map. and yes stock maf is very important in keeping this accurate

[Jesters Deadd]

I have been running chrome v1.1 on my 98 SL for months.... then I decided to change the ECU out for one of my clone ecus to test it. I have now been ruinning it in my SL for months.
Run the chrome rom on the flash ecu and just adjust the injectors size and latencies. You can adjust the fuel tables and stock timing to be the same as an NA.
But I have found the stock timing on the NA is very agressive on the lower rpm side and will knock with 93 octane. It knocks like crazy with 87 octane. So adjust the timing tables to be less agressive and you can run cheaper fuel.
Also no vr4 clone will have the ability to control the variable intake of an SL unless it was cloned from an SL and the motor controller was left in,... and its flashed with an SL rom.

[Greg E]

We put the hunt aside for the VICS in the code but there are 3 possibilities which subs could be it. I was just never able to get any life out of the VICS pins because my VR4 ECU lacks the drivers.

I can give you the 3 MUT commands to try with your SL ECU to see if they come alive if you'd like to test. Then I can give chrome VICS operation quite easily.

[Jesters Deadd]

We put the hunt aside for the VICS in the code but there are 3 possibilities which subs could be it. I was just never able to get any life out of the VICS pins because my VR4 ECU lacks the drivers.

I can give you the 3 MUT commands to try with your SL ECU to see if they come alive if you'd like to test. Then I can give chrome VICS operation quite easily.

Nooo... no more! V2 is so close no more add ons... V3 needs some stuff too...

[Greg E]

LOL!!

I wouldn't be adding any more code. Just mapping the tables that are already there.