Stevey629

after fixing my cars problems, i.e. destroyed muffler from running rich and shooting flames, I put an apex'i N1 on my car. after driving say, 30 or 40 mins on the freeway not even getting on it at all because of break-in procedures, I notice that the inside of the muffler is a fairly bright glowing orange from heat. is this normal? if not, whats causing this? rich or lean? I dont know which...

RX7 RAGE

iTrader: (22)

steve...your precat or main cat or both are most likely clogged.

TurboFD

i wouldn't be surprized if when you fixed your rich running problem your engine ended up running too lean. So exaust temperatures increased and caused your muffler to glow.

Larz

Shooting any flames?

Stevey629

ya, I was before I fixed the motor. It would shoot em at a simple rev in neutral up to around 3k. now, it backfires a bit when I get off it, but thankfully none at startup. From what Im told its a little blue flame. So if you're saying my precat and cat are clogged, then can I replace the precat with a DP and not worry about running too lean? Stock ECU, Stock turbos, Stock and cleaned injectors, Stock intake.

austinsFD

they have mufflers that glow, you might have bought one of these my mistake?

RX7 RAGE

iTrader: (22)

yea steve..get that dp asap..ur fine since u only got a catback right now.

voodooracing

sometimes poor ignition component can caused this too, resulting unburn fuel getting dumped into the exhaust system.

voodooracing

that could also be why your car shoots flames too...

T88NosRx7

iTrader: (1)

thats not good, shouldn't be that hot, probably running too lean