xxmerc1914xx

i was looking at getting a new downpipe just to squeeze alittle more power out of the car. i need something with a cat so i was thinking about this http://www.hoganperformance.com/DP7S.htm. it said there is a possibility of throwing a code and i was wondering if anyone had this problem.

and has anyone had any problems changing the cat in terms of inspection and such? im from new york and they really kill us.. thanks

LS4SPEED

iTrader: (3)

It did for me. Took a few startups but eventually the light came on.

gulfstreamcpt

I've had the catted Hoan DP for almost 3 years and I have never had it throw a code ever..... Not even once....

xxmerc1914xx

yeah i was reading reviews and it seems that its really up in the air if you will get a code or not. if it does throw one would i have to buy a diablo tuner or something like that to get rid of it?

williamGT

iTrader: (5)

It took 3 days for my check engine light came on.

higsy

First time with the downpipe it took about a month before it came on. Took it back off because when the code is thrown it disabled the remote start and I needed it for winter. After headers installed I put it back on and threw the code right away. Didn't matter though because I'm going to have it dyno tuned and have the code turned off.

RickAKATed10

iTrader: (1)

So, for those that did get the code, how do you "fix" it without getting a tune?

Nick_Nasty's_GXP

iTrader: (4)

o2 simulator would work, I think there was a thread about this a while ago. I put a sim on my 02MCSS and it turned off the CEL.

Tappeter

iTrader: (2)

try this
http://www.bigdaddiesgarage.com/angled-cel-fix.html
or this
http://www.o2simulator.com/
I made one like the first type with a HELP brand spark plug spacer, workes great.

EmersonHart13

iTrader: (3)

Code here.

JDMC5

iTrader: (3)

It's probably a "catalyst low efficiency code" triggered by the rear O2, it's pretty standard...yeah.

07carlocrusader

TRUE!!! I just had this ordered!! I should be able to install this on the weekend! I went ahead and ordered that down pipe as well!! Sitting in the Garage waiting to be installed as we speak!! LoL!!
I just want to know any catches to make it an even easier install!! Looks like a very quick job, but, someone out there always figure out how to make the process more smooth than what it is!!

havelegs

Code but too lazy to fix

Corny40

iTrader: (7)

One more time...

https://ls1tech.com/forums/ls4-front...ks-so-far.html

F.Y.I., The Diablo will only clear the code, but it will come right back. The only way you can remove the code with a Diablo is if you get a custom tune. Lew (06monteSS) can do one for you for about $50.