I picked my car up from the shop after a new tune and install of LS6 intake (w/o EGR) and a ported throttle body. On the way home, the SES light came on. I took it to Autozone that night, scanned and two codes came up.

P0121 In-Range Operating Throttle Position Sensor circuit failure.
P0404 Exhaust Gas Recirculation circuit rang/performance

I could care less about the EGR code .. I think the tuner just neglected to delete EGR stuff from my computer.

But the TPS one worries me a bit. The ported throttle body I was given from an online shop had a slightly larger pedal than my original '98 throttle body. Does this have to be accounted for through tuning or should I not even be using a throttle-body with a larger pedal? I've also read that the computer simply just throws this code after a cam swap and tune, which I had done before my recent trip to the shop, and has to "learn" the tune. After the initial install of my cam and tune I did get an SES light, but it disappeared before I got a chance to scan it .. and I'm thinking it may have been the same P0121 code.

Your thoughts?

Thanks,

Sean

 

What do you mean by larger pedal? Throttle bodies don't have pedals. Trying to understand what the ?? is.

 

Talking about the blade?