How do you tell a Pettit Unlimited vs Stocker
#1
Belligerent MoFo
Thread Starter
How do you tell a Pettit Unlimited vs Stocker
Yup! I just bought a "Pettit Unlimited ECU" and didn't see an external difference in the boxes. I was told that disconnecting the throttle sensor would not trip the check engine light on the Pettit so I tried that and it came on. Well, now I'm wondering if there is anything else I can check to see if it "still" might be a Pettit.
I've been searching but what A/F number would constitute running lean? What is a good level while running under high boost (10,12,14 type psi)?
Thanks
Victor
I've been searching but what A/F number would constitute running lean? What is a good level while running under high boost (10,12,14 type psi)?
Thanks
Victor
#2
Mr. Links
iTrader: (1)
The Pettit ECU's usually have a long Pettit sticker wrapped around the outside of the ECU case. Other than that, you have to open up the case and look to see if there is a daughterboard soldered on the main board.
There was a thread a while back that had the inside of an M2 ECU pictured. It would be similar to that (if you can locate the thread).
There was a thread a while back that had the inside of an M2 ECU pictured. It would be similar to that (if you can locate the thread).
#4
Belligerent MoFo
Thread Starter
I have a downpipe and a catback and can probably hit 14 psi with my stock ECU, put I don't want to. Likewise if this a just a stock ECU instead of the Pettit, I don't want to lean out and pop my engine.
No sticker but I'll check for the daughter board this weekend.
I was also thinking of getting on a dynojet and checking the a/f which is why I need to find out what is considered a lean, normal, rich mixture. Any help with this would be much appreciated.
Victor
No sticker but I'll check for the daughter board this weekend.
I was also thinking of getting on a dynojet and checking the a/f which is why I need to find out what is considered a lean, normal, rich mixture. Any help with this would be much appreciated.
Victor
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Originally posted by vchacon
I have a downpipe and a catback and can probably hit 14 psi with my stock ECU, put I don't want to. Likewise if this a just a stock ECU instead of the Pettit, I don't want to lean out and pop my engine.
No sticker but I'll check for the daughter board this weekend.
I was also thinking of getting on a dynojet and checking the a/f which is why I need to find out what is considered a lean, normal, rich mixture. Any help with this would be much appreciated.
Victor
I have a downpipe and a catback and can probably hit 14 psi with my stock ECU, put I don't want to. Likewise if this a just a stock ECU instead of the Pettit, I don't want to lean out and pop my engine.
No sticker but I'll check for the daughter board this weekend.
I was also thinking of getting on a dynojet and checking the a/f which is why I need to find out what is considered a lean, normal, rich mixture. Any help with this would be much appreciated.
Victor
Get a boost controler and keep the psi on stock level till you get any aftermarket ECU.