will it pass?

**unibuga** · 08-24-2010, 06:04 PM

ok so im looking at some headers but i need to know whats will pass inspection in texas we do emissions...
so which headers will work,y pipe,ect.
also id like to go with the lm1 any opinions?
im used to loud vehicles so noise doesnt bother me as long as i wont get a ticket every day because this is my DD

**35th-ANV-SS** · 08-24-2010, 07:19 PM

LM1 with long tube headers is going to be extremely loud and probably raspy. Since your car is newer than 99, they probably don't do a visual check, just OBDII computer plug in.

If so, you can run LTs, a Y-pipe or ORY, and keep your cats or delete them. However, if you delete the cats, you will have to get the rear O2 sensors tuned out in order to pass emissions.

**unibuga** · 08-24-2010, 07:29 PM

ok ill talk to my exhaust guy i know a couple places that as long as it will pass emissions i ca get a sticker....so i can delete the cats i just have to have them tuned out?
also after everything is done i want to have it tuned should i use frost?
what are there prices and how long will my car be down?

**35th-ANV-SS** · 08-24-2010, 07:36 PM

Best if you talked to Frost directly....but the charge is $125 for his mail order tune I believe and the turn around time is pretty nil in most cases I've seen. You basically mail your PCM to him, he tunes it based on your mods, and mails it back to you. Simple and easy.

And yes, the rear O2 sensors need to be tuned out without cats on the cars. When you remove the cats, the SES light will come on since you no longer have the correct voltage output from your rear O2 sensors showing that your cats are doing their job. A tune can make there be a false constant voltage reading, fooling the computer, making the computer think that everything is fine....in a nutshell.

**unibuga** · 08-24-2010, 07:43 PM

ohhh ok makes sense
without the cats will it still pass though? im sorry i keep asking but it cant be stressed enough lol just dont wanna pull up and it not be clean enough for them ya know?

**35th-ANV-SS** · 08-24-2010, 07:45 PM

If the rear O2 sensors are tuned out, it will pass. If you don't get them tuned out, it will not pass. Your SES light will be on without having them tuned out so emissions will not even test your car with the light on.

**unibuga** · 08-24-2010, 07:48 PM

ok sounds easy enough....do you have any suggestions on what headers to buy for a mid price and quality also with whatever emissions stuff i need

**35th-ANV-SS** · 08-24-2010, 07:52 PM

middle of the road - pacesetters...lots of people have them here and have good feedback on them.

**unibuga** · 08-24-2010, 07:55 PM

sounds good...ohhh also have you heard any reviews on the volant CAI? or should i just stick with a lid

**35th-ANV-SS** · 08-24-2010, 07:57 PM

no comment on that. Seen more people with lids though. You may want to try using the search function of the site...probably several threads on it already. If you can't find anything, start a new thread.

**unibuga** · 08-24-2010, 07:59 PM

yeah probally what i will do ....it looks cool but i dont think it will take advantage of the ram air as well

**35th-ANV-SS** · 08-24-2010, 08:03 PM

I personally think a lid looks cleaner.

**unibuga** · 08-24-2010, 08:08 PM

yeah i bought my car with a lid on it but im not sure what brand it is though....it says "ls1 motorsports" in red letters

**Y2KPewterSS** · 08-24-2010, 08:13 PM

Originally Posted by unibuga

yeah i bought my car with a lid on it but im not sure what brand it is though....it says "ls1 motorsports" in red letters

Those letters peel right off. You could also paint the lid any color you wish, or paint it a nice gloss black to make it look better.

**unibuga** · 08-24-2010, 08:17 PM

any idea on a brand? or are they all about the same?

**xmarkx** · 08-24-2010, 08:52 PM

Originally Posted by unibuga

yeah i bought my car with a lid on it but im not sure what brand it is though....it says "ls1 motorsports" in red letters

I have that same generic lid lol

**unibuga** · 08-24-2010, 09:25 PM

hmmmm lol

**Y2KPewterSS** · 08-24-2010, 09:35 PM

Originally Posted by unibuga

any idea on a brand? or are they all about the same?

As far as performance, you aren't going to see any significant difference among any of them. Probably the most important deciding factor is fitment. Some people have fitment issues with the SLP lid. Might steer away from it. Check out our sponsors for lids, you really can't go too wrong with any lid.

http://www.ls1.com/forums/sponsor.php

**Mark2002** · 08-26-2010, 01:33 PM

Originally Posted by unibuga

ok so im looking at some headers but i need to know whats will pass inspection in texas we do emissions...

I'm in Texas as well and had the same question. I went to my local inspection station, talked to the inspector, told him what I was planning on doing and asked him if it would pass. Made me less worried about my decisions.

**unibuga** · 08-26-2010, 01:36 PM

Yeah I just need to find a good inspector so I don't get the wrong info all the shops around here have gotten cheap labor with no skills so any work you get is "questionable"