Another Exhaust Question

Sorry about another question about which exhaust system to get but I did a search and couldnt figure out what I wanted to. I am looking at redoing my whole entire exhaust. I have been looking at a pacesetter header, high-flow cat, and the apexi n1 cat back system...would this be a good setup. Also which is better a highflow cat or a test pipe, I live in northern minnesota so there isnt any pollution control testing. I was also wondering if I upgraded all of this would I want to get a new downpipe, and what size pipe all the way through is best.

I know it's alot of questions, but any input would be helpful. Thanks alot.

Headers are only for non-turbo cars. You won't need to upgrade your exhaust manifold until you have a larger turbo.

You can get a RRE downpipe that extends past the cat (permanent DP attached to test pipe) for $230. A test pipe is much less restrictive than a catalytic converter, but louder.
Downpipe(extends past cat) + N1 should do fine until you upgrade to a large turbo. Then you might worry about ported/bigger exhaust manifold and ported/bigger o2 housing.

I have a 14b turbo on it, are you talking larger than that?

Yeah, stock o2 housing and exhaust manifold will do fine for a 14b. If you really wanted to squeeze every drop out of that 14b, you might do it... but for the money, you might as well be buying a larger turbo. You'll be fine :)

cool, so I would be right in saying that it would be more worth my money going with a test pipe instead of a high flow cat?

Very much so, and test pipes are cheaper.

you said that it would be louder though, with the n1 will it still make a lower tone. I am trying to avoid a high chainsaw noise :)

No turbo DSM is capable of becoming a bumble bee. Making the exhaust louder by going to a larger piping won't make it any higher, just louder in volume. It will sound nice with that N1 and no cat. :)

if I take out the cat and put on the test pipe wont i have problems with the o2 sensors? what should I do with those. I dont have to go through emissions testings or anything like that ever but if I take it to the track will I still be able to run with no cat or do they have any regulations on stuff like that?

If you go with dsmlink (I know you were asking about eprom ecus) there will be no problem. Even with out it, its generally ok. Some cars never complain, other will toss a code a couple times, or like mine it will trip the CEL every day for 6 months then just stop :D Jsut use your datalogger to clear it, or disable it in DSMlink.

Heres a tip. Remove the rear sensor but leave it plugged it. Wrap it in aluminum foil (its heated) and ziptie it up under the car where it wont rub on the exhaust or driveshaft. The ECU will think the cat is still there. I posted an explanation of why elsewhere on this site if you are interested, but this works for everyone as far as I know. Worth a shot.

Cool. Thanks for all the help!

Can DSMlink clear codes, and fool emissions test machines as well?

I am going to guess and say if emission inspectors see it, they will fail you.
I know if they see a air/fuel controller they fail you. At least in some states.

DSMlink is just a connector and software. I'm wondering if you programmed the ECU using DSMlink (programmable ECU = EPROM) and hid the connector, if they would be able to tell.

Even I a novice to mitsubishi can answer this. Im a past honda lover and pacesetter is very big into honda. Yeh with pacesetter you get what you pay for. Ive had a few forums on pacesetter exhausts, basically they either rust or fall apart or break in some way shape or form within a month.

At least for hondas, stay away from pacesetter at all costs, I'm pretty positive the same quality caries over for mitsubishi too.

this is what the emission station do at where i live, but some station are more strict. on 96 and newer car that equipped with obd2. they'll just hook up the scanner and check for code. you'll pass if there is no code and they'll fail you if there is code stored in the computer. but you could request to put the car on the dyno to test the emission. if you pass the emisson test on the dyno they'll pass you even if there is code stored on the car's computer. that what happen to me when i have my vw golf. some station will check under the car to see if there is a converter there. if they don't see it, they'll fail you and give you a fine for removing the converter. and some station even open your hood and match the engine code to the car's vin number.

Sounds typical, but the place I go to will check for codes, and idle the car with a tailpipe tester (NOX? who knows). I just would like to know if I could disable the code myself and have it still pass. I wonder if they check values of the o2 sensor, maybe they don't even bother unless it has a code?

i think they just check to see if there is code(s) stored in the car's computer. and i think the scanner that they have could only pull code(s).

What if you erase them (with a datalogger) a second before you pull in.

DSMlink, like pocketlogger and other loggers, can read and clear codes. If it can completely reprogram the fuel, timing, and rpm parameters while you drive to mcdonalds, it should surely be able to do that ;) Here is a tidbit worth mentioning when talking about DSMlink and emissions. When you connect with DSMlink, the ECU changes over to the DSMlink cmmunication protocol. An OBDII scanner will no longer be able to communicate. So be sure to not connect with DSMlink after you start the car. Should be an issue since you wont be tuning your WOT timing curve while trying to get inspected I'm sure ;) Other than that, theres no way for them to know that DSMlink is there, and dSMlink doesnt give you any advantage in a test. DSMlink isnt in the business of lying to inspection stations to get you a sticker. But being able to clear old codes that could have failed you is a good thing.

What if you erase them (with a datalogger) a second before you pull in.


This is fine, and I would certainly do it. Just be aware that after clearing the ECU it will still run all the tests, and if the problem still exists, it will flag that DTC again and store the code. But if you have old problems that are now gone, or only pop up intermittently, this will help.