Custom Exhaust

[1Gab Laser]

So my DSM project is finally done minus 2 things.

I have to rewire the backup lights and plate lights and have to get the exhaust done. It's a FWD (sadly) so I have to go custom cat-back to a Magnaflow muffler with a 3" inlet. I'm going to the shop on Thursday to get my other car inspected so I'm gonna make an appointment for next week to have the exhaust done. I just wanna know what to ask for when I get there.

1st off, what is the diameter of the stock pipe? Is it 2 1/4" or 2"?

So between the cat and the muffler, I have to go from the stock diameter to 3". I don't think you can squeeze a 3" pipe up through the axle and I'd bottom out everywhere if it went under. So what's the best way to expand the pipe?

I mean what size pipe should I run from the cat to the muffler? I want it to sound good, not ricey, I don't really care about a power increase since I know you won't see much on a NA 4G63 anyways. Just for the best sound.

Here are pics if anyone's interested (you'd better be). I want to take better ones for the gallery:
The engine bay could use a little cleanup but that'll come after its on the road.
oh and props to anyone who knows what my other car is (the white one in a couple of the pics).

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On a side note what do you guys think I could get for this? Its a 91 but its only got 117k miles, no rust. Fresh paint job, all new brakes, ball joints, all that good stuff, Pioneer deck, Kicker 5 1/4"s up front, Kenwood 6 1/2"s in the back, 1000W MTX amp to two 12" MTX Magnum subs. 93 Talon TSi rear fascia conversion and 1gb Laser RS Turbo sideskirts. Seriously it's prettymuch mint minus a cig burn on the headliner. My brother says I should be able to get 4 grand for it.... that'd be nice, enough to buy a decent turbo one.

 

[Hubbard 0]

A 3" exhaust will be over kill for your car since you're non turbo. You're not really going to get a lot of performance out of it, so your best bet if you really want an exhaust is to just get something that sounds nice (3" most likely won't). Searching through Youtube should help you decide what you think sounds good.

If you're looking to sell the car, I wouldn't even bother with an exhaust.

 

[1Gab Laser]

A 3" exhaust will be over kill for your car since you're non turbo. You're not really going to get a lot of performance out of it, so your best bet if you really want an exhaust is to just get something that sounds nice (3" most likely won't). Searching through Youtube should help you decide what you think sounds good.

If you're looking to sell the car, I wouldn't even bother with an exhaust.

Yeah I wouldn't go 3" all the way back.

I don't really care about power because I know there wont' be much gain from anything. I just wanna know what would sound best. Most of the vids on youtube are GSXs or TSis so it'd sound different on those.

I'm gonna keep the car at least for a few months, got some work to do on the other one. But it kinda needs exhaust... its ripped off at the cat right now.

 

[babyviper]

I have a dd n/a and it was a dog till i did some pm to it. Like adjust timing, fuel filter, some hot A@! NGKs fresh clutch,wires,

 

[95fwdtsi18psi]

3" is a little big for a N/T. Stock piping on a 2g is 2" so it might be the same. 2.5" should be plenty for you. Looks very nice man. Good luck.

 

[1Gab Laser]

3" is a little big for a N/T. Stock piping on a 2g is 2" so it might be the same. 2.5" should be plenty for you. Looks very nice man. Good luck.

Thanks, it looks a lot better in preson where you can see the metallic in the paint, that day was kinda ugly outside anyway.

I was thinking go to 2.5" at the cat and run that right back to the muffler then have another expander right there to go to 3". Thats what you're talking about right?

 

[95fwdtsi18psi]

Thanks, it looks a lot better in preson where you can see the metallic in the paint, that day was kinda ugly outside anyway.

I was thinking go to 2.5" at the cat and run that right back to the muffler then have another expander right there to go to 3". Thats what you're talking about right?

Yep, I'm kinda tired sorry for not explaining. That should work perfect for you. Are you getting a high flow cat for emission test passing? If you dont have tests in your area you could get a test pipe or something along that line, a little less restrictive. Sorry if I misses something about that above.

Also if I may ask, how do you have your trunk set up with those subs? I have a setup that leaves me NO room what so ever. You seem to have a pretty decent amount. I'm not trying to thread jack.

 

[1Gab Laser]

Nah, I'm gonna leave the stock cat on, unless theres a leak or something there.

What do you mean about the subs in the trunk? I bought the subs at Circuit City, got a mad deal on them. The subs in the box and the amp for $130.

 

[95fwdtsi18psi]

Nah, I'm gonna leave the stock cat on, unless theres a leak or something there.

What do you mean about the subs in the trunk? I bought the subs at Circuit City, got a mad deal on them. The subs in the box and the amp for $130.

You shouldn't have a leak, I was just wondering if you were considering a cat delete.

IDK it looks like you have way more room then me, I do have a 2g but they have similar space to begin with. Maybe it's just been a really long day for me.

 

[1Gab Laser]

Nah, I don't have the cash for anything else right now. This car took all my money as it is

Before I put the subs in I didn't think they'd fit, but they fit like perfectly. There's about an inch on either side of them and they're back just a couple inches from the seat. The box seems pretty small, look how close they are together

Just wondering from anyone else with the naturally aspirated 4G63.

I didn't expect this car to be FAST, but it's rediculously slow. I can't even chirp the tires from a stop and it takes forever to even get up to 10MPH. This is just in my driveway, its not on the road yet because there's no exhaust.

I'm thinking maybe its because there's no exhaust on it now, there's not enough backpressure so there's not much low end torque? Or are they really like this? I'd hate to drive a 4G37... I'd never get anywhere

I was telling this guy I work with about it, he grew up around Toyotas and built up an MKIII Supra. He told me he could install a turbo kit on it in 4 hours? I found a page somewhere (dont remember how I got to it, it was on geocities or tripod or something like that) that went through the process and it seemed like something to do if you don't mind having yoru car off the road for a year... is it really that easy?

 

[95fwdtsi18psi]

To answer your question. NO. That guy lied to you, well at least I honestly don't see how that's possible.

 

[sik4g63]

Hey man I drive a N/T and I dont have any problems with it accelerating. I know its a N/T but it seems decently quick, not as quick as a boosted car or anything. I havent had problems doing a burnout or chirping 2nd and 3rd. So I am not too sure as to why your car is dogging it like it is.

As for your question about the exhaust I would go with 2.75" piping from the cat back. Thats what I am planning on doing to mine. As stated before 3" would be overkill. Hope any of this helps.

 

[1Gab Laser]

It only has to pass visual inspection, maybe I'll just go with a high flow cat, not a straight pipe. That's if I even want to put more money into it right now. I already need an air pump, O2 sensor, and potentially a catalytic converter and transmission for my other car which is my main priority. The DSM is just a project and a cruiser when it's done, I don't want it to be a daily driver and get the fresh paint all destroyed from rock dings and all that.

I'm going to do plugs and wires next time I get a chance (next week?). The car's been sitting for 4 years other than driving it around my yard and who knows when was the last time someone did a tune up before that.

Any suggestions on what I should go with? Advanced Auto told me the best they had were Bosch Iridium plugs and I don't remember what wires they were but they were like $45. I might end up buying online because I have like $80 sitting in paypal Im' not doing anything with... so that leaves me open to prettymuch anything.

I was looking at the Taylor 10.5mm wires but it said they were only for the 4G63T. Does it really make a difference if its turbo or not?