LBZ CAT delete and EGR block off

LWGMC03 · 09-19-2009, 10:14 PM

Hello I just upgraded to a 07 classic 2500hd with the LBZ. Now it is time to do some upgrades. The first thing I will do is modify the air box. Next I want to delete the CAT and put a good muffler on the stock exhaust. After all that it’s time for a programmer. Well now for the questions, I know that the straight pipe (deleting the cat) will make my check engine light come on. I do not want to have to look at it, so is there a programmer that will change my ECM so it does not throw codes? Also I want to block the EGR because I do not want that sooty crap going through my intake. Can a programmer help with the codes for the EGR block off also? The reason I would like a programmer is because I would like to go back to stock when needed (warranty) and not have to change a lot of stuff. Yeas I know that taking the cat off can affect my warty. That’s why I well modify the CAT( put a pipe through it) so it looks like it is still there and working, so if there is an plug and play programmer out there that can do this like me know.

dozerboy · 09-20-2009, 05:35 PM

PPE can for sure quadzilla should too not sure about others. You should buy a block off plate boost can push the EGR open even if you disable it. I would just leave the cat and replace the muffler with a piece of pipe. It doesn't get much louder and the cat isn't a big restriction.

1994Gmcsierra71 · 10-12-2009, 12:32 PM

Mine is an 05 and i added a 4" MBRP exhaust with no kitty, swiss cheese airbox and have the programmer set on the 70hp tune and haven't had the check engine light come on yet. Not saying that it won't but ive been lucky so far. Can't wait to put the kodiak MP on next weekend!

TexMax · 10-12-2009, 01:17 PM

Shouldn't have any codes with the cat delete and egr blocker. I also don't see how deleting the cat is going to affect your warranty? Nix the muffler all together. It's not really that loud

steakman · 10-14-2009, 10:08 PM

EGR block is excellent idea. I added the "fingerstick" as this was first mod back in 07 when I bought my LBZ. No CEL ever on that item. Also run Trubo back with an AFE muffler..love the turbo whistle.

If you really plan on keeping your vehicle a long while - think about 2ndary oil and fuel filtration. Two excellent longetivity measures you will want to research.

Cheers,

stk

98[GMC]z71 · 10-14-2009, 10:24 PM

1. Straight piped exhaust will not throw a code.
2. EGR block off won't throw a code either.
3. Any half way decent programmer will clear most of the codes that you could throw.

Farmer98 · 10-15-2009, 01:37 AM

A blocker plate will throw codes if you don't have tuning to compensate for it..

TexMax · 10-15-2009, 07:13 AM

Quote:

Originally Posted by Farmer98

A blocker plate will throw codes if you don't have tuning to compensate for it..

Negative. Atleast mine never did

BigDiesel667 · 10-15-2009, 07:31 AM

Unless you have a Cal emissions truck you shouldn't throw any codes.

dddonkey · 10-15-2009, 12:22 PM

Just watch for emissions comming to a state near you. I know that AZ has diesel emissions and Cali is getting them along with others. They check for a CAT, there was an articl in Diesel World this month about it and how to pass the test.

dozerboy · 10-15-2009, 07:12 PM

Doesn't matter where the truck is from some code some don't.

tank454 · 10-15-2009, 09:50 PM

I live in Colorado and I've never had to do an emissions test...ever. lmao

thedirtymax · 10-22-2009, 11:35 PM

do a fingerstick if you wanna pop ur turbo. get it tuned with efi live and be done with it :) make as much power as you want on that lbz with efi....till you nuke ur tranny haha but seriously efi is amazing. you wont have ANY codes with it

dozerboy · 10-23-2009, 03:51 PM

Who has blown a turbo with a fingerstick unless they where stacking tunes? Thats why ya should have gauges.

thedirtymax · 11-05-2009, 11:07 PM

Quote:

Originally Posted by dozerboy

Who has blown a turbo with a fingerstick unless they where stacking tunes? Thats why ya should have gauges.

everyone around here thats had o a "finger stick" or "boost stick" has poped their turbo with ONE tune. just do efi live and you wont have to waste ur money with a booost fooler like that. simple as that

dozerboy · 11-06-2009, 12:38 PM

What you don't think you can blow a turbo with EFI? If you know what your doing you won't blow a turbo with a finger stick ETC.

thedirtymax · 11-06-2009, 07:41 PM

Quote:

Originally Posted by dozerboy

What you don't think you can blow a turbo with EFI? If you know what your doing you won't blow a turbo with a finger stick ETC.

o i know that you could pop a charger with efi as well but chances are, unless ur building ur own tunes, the person that tunes it wont put too big of a boost map in it that will blow the charger. you stand a higher chance of popin one with a fingerstick and a handheld over just efi live.