jsmith309

I bought my automatic SS (98) a month ago. Had no problems with performance stock. But since I've added a few mods and done the free mods, I'll go WOT at about 60 mph and it feels leggy as hell, doesn't feel like its misfiring but like its not getting enough air or fuel. Almost feels like a stock lt1. I gave it WOT LAST NIGHT AND GOT an SES light. I've added a K&N air filter, SLP Lid. I've grinded down the ridge in the throttle body, cut the EGR tube, removed a section of the air dam, cut the filter tray and bypassed the coolant to the throttle body. Besides getting the check engine light checked, any legitimate suggestions on repair? I've got it boiled down to a dirty fuel filter, weak fp or bad spark plugs/wires. Under conditions where I'm driving normal. The car reacts fine

RPM WS6

iTrader: (3)

Check out the SES light before spending time or money on anything further. The data that you need to fix the problem could possibily be right in front of you with that code, so it's pointless to guess without first using the information available to you.

If it turns out that the code has nothing to do with anything that would effect power (say, the AIR pump or something), then we can begin speculation on what might be causing the car to be down on power.

jsmith309

Codes were.. P0131, p0151 p0137. Basically all o2 sensor low voltage errors. Probably because I used seafoam in the brake booster

senicalj4579

iTrader: (41)

Iv used seafoam many times and never had that problem. But I will say that dosent mean it wont happen. I actually had an o2 go bad after mopar cumbustion chamber cleaner along with a missfire. I dont remember if I had those codes though. Long story short I had to replace it.
Try and delete the codes and take it for a ride. See if they come back?

jsmith309

It's still poopy. I cleaned the maf here is a pic

RPM WS6

iTrader: (3)

Looks like you are having issues with the front O2 sensors, and that can certainly cause some performance issues. That rear O2 sensor code won't have any effect on performance though, so focus on getting the fronts working and see how the car performs then.

jsmith309

Ok thank u

bww3588

iTrader: (49)

That rear o2 sensor code could be telling you your cat is plugged up.

But I would suggest replacing the o2's first.

jsmith309

Okay. I'll start with the front 2