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Anyone wideband a Pettit unlimited ecu?

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Old 01-25-04, 07:27 PM
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Anyone wideband a Pettit unlimited ecu?

Just curious what A/F's a person sees with this ecu. Is it in the 10's, low 11's, etc and what mods? If it's extremely rich, then a S-afc could be used to dial some of the fuel out and make a little more HP and still be safe.

Tim
Old 01-25-04, 07:33 PM
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Arrow

Here's about the only A/F info I've seen for the Pettit so far:

https://www.rx7club.com/showthread.p...hreadid=259617
Old 01-25-04, 07:50 PM
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thanks, I must have missed that thread.

Tim
Old 01-25-04, 07:51 PM
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My question is if you are running rich enough at 14.7 psi can you turn up the boost another psi and be safe? Also a little off topic; will the pettit ecu and m2 ecu support a single turbo or do you have to go stand alone (power fc etc...). Sorry if its a stupid question.

R.K.
Old 01-25-04, 08:12 PM
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https://www.rx7club.com/showthread.p...hreadid=259617
these dyno runs were using a pettit unlimited, check sign for mods
Old 01-25-04, 08:38 PM
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here's another dyno
http://www.silverbulletrx7.com/dyno.html
Old 01-25-04, 09:43 PM
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Another for ya...

This was at 10 psi, dp, cat back, intake, fmic, stock motor, turbos, cat, and fuel. Tail-pipe a/f probe. Disregard green run as probe had come out. Power sucks because previous owner had cut the CRV wire at the ECU.
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