[mow]

Hi.. guyz my story is long & sad… I had a pro… and I blow up the engine during the dyno thing, anyway… I decide to go naturally aspiration got 11.1 compression & stage 3 comp cam… from SHM. (it’s ready for 200 juice)

Now the A/F gon crazy (rich & lean) even on the park position or neutral… I’ve installed (bbk62mm) coz me a fail safe engine mode I’ve eliminate this so… now no fail mode.
Bank 1 go lean – bank 2 go rich again Bank 2 go lean – bank 1 go rich……………………………..

The O2 sensors r new, and I don’t know what to do I cant even ton the car so if there any suggestions please guyz let me know

Just thinking could be the Fuel injectors controller OR the main computer???

Mods:
11.1 compression
Comp stage 3
3000 stall
Full exhaust system
Auto

[RanGer498]

cant read your post ..bad color combo.

[mow]

Hi.. guyz my story is long & sad… I had a pro… and I blow up the engine during the dyno thing, anyway… I decide to go naturally aspiration got 11.1 compression & stage 3 comp cam… from SHM. (it’s ready for 200 juice)

Now the A/F gon crazy (rich & lean) even on the park position or neutral… I’ve installed (bbk62mm) coz me a fail safe engine mode I’ve eliminate this so… now no fail mode.
Bank 1 go lean – bank 2 go rich again Bank 2 go lean – bank 1 go rich……………………………..

The O2 sensors r new, and I don’t know what to do I cant even ton the car so if there any suggestions please guyz let me know

Just thinking could be the Fuel injectors controller OR the main computer???

Mods:
11.1 compression
Comp stage 3
3000 stall
Full exhaust system
Auto
sorry

[HMUSN]

is it a narrow band 02 or a wide band 02?

[mow]

Wide band O2.

[HMUSN]

3 things make a car run.
fuel,air and spark.

I take it the car has a tune for those cams?

I would datalog and see what your numbers look like.
it could be as simple as a bad iac.

[onederful100]

u sure it's not your a/f gauge? it could be just reading wrong.
may need to be recalibrated.

[mow]

No sir the A/F gauge is ok… we used the HP software “the scanner” it shown that the bank1 go lean & bank 2 go rich and then the opposite……

[JakeM]

If your using just a scan tool to read your O2's and you are not setting a input on the scan tool, you are reading the narrowband O2's that came on the car factory. You need to get yourself a (set if you can afford it) widebande 02 that will have a guage seperately. Unless you are running a stand alone or have programmed your Wideband to read on the scan tool, you are reading info from the narrowband 02's.

P.S. If in fact you are reading your widebands, make sure your FRPS (Fuel Rail Pressure Sensor) is in good working condition. Also, make sure you (or your tuner) check all your base tables for Fuel and Spark to make sure your not missing something. You had mentioned something about a aftermarket throttle body as well, you may want to try to swap back to the stock one if you haven't already.

Thats about all I can think of right now. Could you post up the data?

[Trick Tuners]

My guess is that you miswired the o2 sensors to the wrong bank. Do the fuel trims peg at .75 and 1.25 on each bank, then swap? 11:1 is super high, especially for a big shot of juice. Hope you plan on running 100+ octane.

[07 Grabber GT]

Originally Posted by Trick Tuners 11:1 is super high, especially for a big shot of juice. Hope you plan on running 100+ octane.

+1 ... with compression that high there could be a lot of other issues causing the computer to be confused ... I assume the cam duration overlap is so huge you need the compression ... I haven't seen any cams out yet that are that loppy. You need to post your data along with the cam profile ...

If running NOS with that on a 3V you might want to consider putting large rectangular openings in your hood now so the heads have a clear exitway.