Alright, well I'm throwing a few codes from the Hahn kit on the 2.4. So far as I can tell, these have each registered twice, except for the misfire - which I believe I've found and corrected.

P0304 - That's the cylinder 4 misfire (was still running stock plugs..)
P0121 - Throttle position senor circuit inactivity (Am I understanding this is an inherent code with the Hahn tune?)
P0108 - MAP Circuit high voltage (Maybe also an inherent code from their tune?)

Like I've said, I've thrown these codes twice. Both times was during a high-boost shift into 3rd.

I'm also running smellably rich at idle, can't confirm at boost since I haven't hooked it up to a wideband.

So, anybody else experience these?

 

well first I would change the gap on your plugs and run one step colder.
2nd of course your going to get a map high voltage, it's not designed to see "boost"
for the throttle position sensor one though, I have no idea.

 

Thanks for the quick reply.

Got the plugs taken care, now running NGK coppers and gapped to the same position as CelicaCobalt's - I think that problem is gone now.

Any other ideas? I'll have to ask Hahn about the MAP CEL, seems to me their tune should've bypassed or eliminated this CEL if for no other reason than it's a nuisance.

 

yeah probably should have shut that code off, but that's all that needs.

as for the tps though, I'm stumped never had that code pop up before, you sure the connector to the TB is fully popped on?

 

I'll check the piping and see if I can find anything. It could technically be any bit of connection after the MAF, correct?

 

the 0121 shouldn't have anything to do with the maf, just the throttle body

 

yeah i got the tps one before and it stayed until i got my custom tune done. Did you reset the pcm after changing the plug setup?

 

I reset the PCM this afternoon and haven't thrown any codes since then.. we'll see...

 

what kind of ngk plugs do i need to run for my s/c setup...its recommended and where can i get it?

 

NGK Lfr6a-11. Found mine on ebay.

 

yes these do great for me compared to my old iridium ones. i still get the occassional misfire in the really high rpm's sometimes though. Probably just my tune. i need to get someone better qualified to tune my car around here.