Quote:
Originally Posted by jstn
That's the thing with this car - I don't really know. I bought it used in it's current form. Seems to be totally stock other than the Vortech kit and some sort of header-back exhaust. Looks catless, there's a big resonator where the secondary cat used to be. Based on the rest of the car and what little of it's history I have, I'm operating under the assumption that the SC install was most likely done in whatever the cheapest and most basic way is.
The plan is to baby it around this winter while I finish all of the shit that should have been done along with the SC kit: radiator, dual catch cans, cam plate, header, stuff like that. Then in the spring it's getting a small pulley and will be professionally tuned on a dyno.
I'll check and see if it has the OEM MAP sensor or not tonight. Pretty confident that it probably does have the original one since this is a pretty low boost set up and I don't know they would've needed a different one but I don't know all of the ins and outs of tuning so maybe I'm wrong there.
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Well I believe a 'savvy' (or hacky) tuner can probably tune a base Vortech kit with the stock MAP sensor, even though it will peg it 1/2 way through the RPM range. But not ideal - if that's the case then it would make sense that your readings are capped. Worth it to check it out, and also worth it to upgrade and re-tune if it is the stock sensor. I think I might have an extra 2.5 bar sensor in my garage somewhere.