Full Exhaust

[Camaro3800v6]

I decided on doing the headers now. Pacesetters ordered.

Now about the cat..

Will both these cats give similar performance?

Is the 94169 high flow?

only the 59959 says high flow.

Thinking about getting the 94169 with the 02sensor openings already there.

[LETZRIDE]

I don’t think the 94169 catalytic converter is high flow... I also am not sure if the location of the O2 sensors would work when installed on our cars.

if you are having an exhaust shop install this for you it will take them a few extra minutes to install an 02 bung or two in the piping. I believe the y-pipe from pacesetter already has a precat bung as well if I remember correctly.

02 sim would only be needed for the furthest to the back o2 sensor as that is the one that just “checks” to make sure the cat is working at oem specs.

[ssms5411]

Yes the pacesetters have the Pre cat O2 bung, cats it your choice I would think if its 3" it should flow alot better than stock.

[Camaro3800v6]

So my parts came in.. Got the cat without the 02 holes.


Are you saying skip the mandrel bent pipes over the axle because of the price? If I don't care about the extra cost would you think it's worth it?

Everything I read says.. mandrel bent is the way to go and the crush bend, which is what the exhaust shop does is restrictive crap that will corrode.

Since I didn't know what mandrel bent exhaust was back when I got my catback on, I'm guessing I already have none mandrel bent exhaust which is "crush bent"? on my catback.

when I bring my headers and cat to the shop are they just going to bolt/weld those on to my magnaflow catback? Do they have to make any additional pipes? Still learning all of this..Don't want them to leave any restrictive pipes on.

is it that.. they have to re bend the 3" inch over the axle for some reason? Or I could just have the mandrel bent over the axle put on while I'm there for a benefit?

LETZRIDE
you had an awesome 3.8 so I think non mandrel bent must be fine.

i just want to get it done with the most flow, the first time.. and not regret later that I didn't get mandrel bent. May want cam, supercharger eventually.

ssms5411
Since you couldn't find those mandrel bent pipes does that mean we can't get mandrel bent on our 3.8s anymore? Any different brands that would work?

[ssms5411]

Nice, glad you got them in, I think you should be fne with a 3" over the axle pipe. Letzride is correct since your not going for any land speed records. Lol You should be fine.

[Camaro3800v6]

Ok Thanks lol.

[LETZRIDE]

So my parts came in.. Got the cat without the 02 holes.


Are you saying skip the mandrel bent pipes over the axle because of the price? If I don't care about the extra cost would you think it's worth it?

Everything I read says.. mandrel bent is the way to go and the crush bend, which is what the exhaust shop does is restrictive crap that will corrode.

Since I didn't know what mandrel bent exhaust was back when I got my catback on, I'm guessing I already have none mandrel bent exhaust which is "crush bent"? on my catback.

when I bring my headers and cat to the shop are they just going to bolt/weld those on to my magnaflow catback? Do they have to make any additional pipes? Still learning all of this..Don't want them to leave any restrictive pipes on.

is it that.. they have to re bend the 3" inch over the axle for some reason? Or I could just have the mandrel bent over the axle put on while I'm there for a benefit?

LETZRIDE
you had an awesome 3.8 so I think non mandrel bent must be fine.

i just want to get it done with the most flow, the first time.. and not regret later that I didn't get mandrel bent. May want cam, supercharger eventually.

ssms5411
Since you couldn't find those mandrel bent pipes does that mean we can't get mandrel bent on our 3.8s anymore? Any different brands that would work?

mandrel is better - but not substanial. If the price is the same or very similar- go for mandrel bent

If you want to squeeze every ounce of power- go mandrel bent (without you might leave 2-3hp on the table)

usually it is a few hundred dollar difference - and for the 2-3 hp difference I’d say put the money into gears or a tune or something else that makes more of a difference.

It’s not like you are only installing a muffler, the bigger piping is what makes the biggest difference. I personally believe there are better things to spend your money on than mandrel

[Camaro3800v6]

My car is all done but spark plug problem

The muffler shop said they can't get the spark plugs to fit without touching the headers.They said normally they would recommend getting 90° spark plug boots but the current boots are stuck on so he wouldn't be able to replace them without damaging the existing plugs.

Does anyone know what to get that will fit with pacesetter headers without touching, that gives good power but also works reliably with our cars? I want to get all new plugs and wires anyway I just need to know that they will fit without touching the new headers, So I can get my car out of the shop

[ssms5411]

Msd 8.5 wires, they come in 90 degree boots. You also could get heat sleeves that would protect the wires also, i have pacesetters and i run straight boots with heat sleeves. No problems.

[Camaro3800v6]

Want new spark plugs as well. Performance wise Is there any benefit to aftermarket "performance" spark plugs, or will new stock spark plugs work just as good with the Msd 8.5 wires?

its 80 bucks an hour at the shop.. need an opinion do you think I should just do the plugs later myself or do both plugs and wires at once? Kinda don't mind him just getting it done.. As long as it doesn't take forever.. I know some spark plugs are hard to get to on our cars.

[ssms5411]

Ngk tr55's are good for stock, Might as well do the spark plugs easier to reach with the headers off, plus they be good for another 100k miles so you shouldn't have to worry about them. The heat sleeves are probably your best bet from keeping the wires from burning on the headers. If the headers are off its real easy to change spark plugs, with the headers on #4 and #6 can be a pain.

[Camaro3800v6]

Msd 32799

Noticed there's atleast 2 different Msd part numbers that fit 3.8s so is this the right Msd 8.5 that comes with the right 90 degree boots?

Ngk v power Tr55/3951

these will work?



Going to to check some auto part stores to find them faster

[ssms5411]

Yes the msd website says the 32799 will work and those should be the spark plugs, a parts store should carry the ngk tr55's.

[Camaro3800v6]

the Msd 8.5s won't be at part stores? Trying to get this done, and stuff cost a lot to ship here. Not even sure if I can overnight ship.

[ssms5411]

Just get some stock ones for the time being, and swap them out, not hard to do, the spark plugs are the hardest part when changing, wires you take one off and replace. That way you don't get confused on where they go.