If your in the U.S. I'd agree with the previous reply as car prices seem extremely cheap. If this isn't the case I wouldn't get all excited about the standard V6 GT engine delivering ball tearing performance either. I've got one & whilst I love it to death, wouldn't call it a high performance engine. I recently drove a straight 6 turbo (not Probe) & thought I was in a V8 rocket on steriods. I haven't stopped thinking about the possibilities of putting a turbo into the Probe ever since. From what I've read turbos seem to increase power by 50% & that's without messing around with anything else. Maybe you could turbo the 4 cylinder & be just as happy....without worrying & spending on all the mods necessary to put a 6 in.
Cold & warm air intakes are another option but the jury (in my mind) is still out on them. Sounds to me like you get moderate performance increases but also introduce risks which could lessen the life of the engine. Food for thought.
I recently went to get the car I just bought smoged. It failed. Running to rich. Engine codes for O2 sensors. I changed the two out that are accessible from the hood. On top of each exhaust manifold. Now I’m working on the one just past the catalytic converter. I removed it only to find out it...
I have blocked off the hvac inlet under the cowl grill as a test assuming the air was leaking in there, but no change. Floor vents have good warm air coming out, can't find any diagrams to get any further ideas where this might be coming from. Any thoughts?