Hello friends,
I've had my car inactive for about 7 years but I've missed it and decided to get it running again.
I've just had a HSR installed to replace the aftermarket TPI set-up. Got a prom from PCMforless.com(EGR and A.I.R delete). My current combo: HSR, 52mm TB, ZZ4 short block, LT4 hot cam, AFR 190cc heads, 25lbs LS1 injectors.
I'm getting a SES for MAP sensor code and the bird runs erratic, surges in power. Basically undrivable. Installed a new MAP sensor and the same thing.
My question is does the distance of the relocated MAP sensor matter?
I mean the length of the vacuum hose and wires to the MAP matter?
Scan tool shows everything OK at idle but when I give it gas under load the SES for MAP comes up.
I tried to do a search but no luck. Any and all input is welcome.
Thanks in advance
Mike
P.S. I've got an exhaust leak from the flange at the headers, if that's relevant.

 

Granted this thread is a bit old and your problem is probably solved but I had a similar issue with a chip from PCMforless.com. I had a speed sensor code. I took the chip out and it ran much better and the code went away. It didn't run great but i could drive it. I just took it to get dyno tuned and had it done right.