NOLA RX-7

IS a JDM tll diferent than the regular tll ECU???

RotaryRocket88

iTrader: (7)

Yes, but the the only time it matters is with the S5 turbo ecus. The J-spec N374 often needs rechipping to work with US-spec cars. N370 is the US ecu equivalent.

NOLA RX-7

well i have a JDM engine But the ECU is not. So i think thats my problem.

texFCturboII

iTrader: (17)

they may still work however....

RotaryRocket88

iTrader: (7)

I don't know what your problem is, but I can tell you that's not it. The complications I mentioned come from body wiring/electronics differences, the engines themselves and all sensors are nearly identical. The only real electrical differences between US and Japanese engines are emissions related and not important. Just about everyone with a S5 turbo swap uses the US-spec N370 ecu regardless of where the engine came from.

texFCturboII

iTrader: (17)

So what is the problem then? what symptoms ya got?

NOLA RX-7

well these are the symptoms...
I start the car then drive it around the block fine in the second try the car starts to misfire no power. i turn it off and its fine again but same thing after couple seconds misfire again.......

texFCturboII

iTrader: (17)

How long until it starts to misfire? like ten minutes maybe, sometimes a lot sooner? Is this a s5 turbo? Are you getting check engine lights at all when it starts misfiring? sounds kinda like limp mode from your vague description....

88RXVERT

iTrader: (5)

I agree, sounds like the car is going into limp mode...I know often times it can be caused by a malfunctioning OMP, start by pulling the codes.

NOLA RX-7

were do i do this and how???

RotaryRocket88

iTrader: (7)

OMP testing: S5 FSM section 2, pages D-16 to D-18.

88RXVERT

iTrader: (5)

Just go down to your local auto store..I think they all pull codes for free now (in hopes to sell you stuff) see if you get a OMP code....start there.

SonicRaT

iTrader: (6)

I doubt any of them know how to even pull the codes on a non-OBD car.

batmanfc

with the jspec harness can u use the n370 and will everything work jsut fine?

KhanArtisT

iTrader: (2)

If its an S5 it is very easy.

http://www.fc3spro.com/TECH/HOWTO/ER...KI/kerror.html

2slow4stock

iTrader: (18)

Yup. It's most likely OMP. I do have one for sale if yours is indeed bad. Electric omp, n/a and TII's are the same.