Fweasel

iTrader: (6)

I'm looking to buy a set of spark plug defoulers to use with a set of Magnaflow high flow cats. Curious as to what other's have used who were successful in preventing a CEL from popping up.

I see a lot of the standard shaped, short length versions


Wondering if a 90* version might offer better results allowing the O2 sensor to be pulled further from the exhaust stream.

54inches

iTrader: (4)

Have your tuner turn off the rear cats; problem solved sir.

stick1975

Did that many years ago with an 01 C1500 truck I swapped 4.8 for a 6.0 with headers and duals. Got them off the "help" sec in the local auto parts store. Main thing I remember is that had to use 2 for each sensor, drill 1 so the O2 would fit in it, and the screw both into the 2nd, then screw all three in the pipe. Not exactly the right way, and having them turned off would be better, but kept my CEL out.

stratass

Works great.Put a little bit of steele wool in the bottom one.

CTSVBiggie

iTrader: (1)

did this on my Sentra. V is tuned out.

chitown21y

iTrader: (6)

http://www.g8board.com/forums/showthread.php?p=827962

isis

iTrader: (1)

I have those cats and used the straight piece you have pictured. Need 4 total, drill 2. No steel wool needed

Also, no CEL for a year so far. Passed inspection in PA (Allegheny Co) OBDII and visual in September no prob.

54inches

iTrader: (4)

Why aren't you guys having these tuned out instead? Money? Just wondering, not hating on ya.

Fweasel

iTrader: (6)

Gravy, thank you.

I'm currently not tuned, and there's no cost justification to get one at this point with more significant mods planned for the future.

isis

iTrader: (1)

It's way cheaper, way more simple to do all at once. The O2 sensors already have to come out so other than drilling them ahead of time, there is zero extra effort.