Spirit Exhaust

[JrVipr]

I am in the market for a replacement exhaust for my 94 2.5 spirit. I want something a bit more agressive sounding but also want to get some more pep out of it. I was debating between a 2 1/4 or 2 1/2 size pipe in stainless with a high flow cat. What size would be more feasable since I don't drive the car to often. Also haven't decided on which muffler to get either. I was told at the exhaust shop that a resonator would also be benificial? Is that true?

[Hemi-K]

Quote:

Originally Posted by JrVipr I am in the market for a replacement exhaust for my 94 2.5 spirit. I want something a bit more agressive sounding but also want to get some more pep out of it. I was debating between a 2 1/4 or 2 1/2 size pipe in stainless with a high flow cat. What size would be more feasable since I don't drive the car to often. Also haven't decided on which muffler to get either. I was told at the exhaust shop that a resonator would also be benificial? Is that true?

2 1/4 is about the biggest to go with for the street. More than that and you will lose some bottom end torque. A resonator is only beneficial to keep it quiet.

I think Dynomax had a system for the Spirit a while back, might want to look into that.

[capev86]

go with plain 2" diameter pipe and find the lowest restriction, smoothest flowing muffler you can find. a high flow cat is also important. expecially with naturally aspirated engines, efficiency of flow is far more important than quantity of air moving through the system. jcwhitney has a loud dual tube turbo muffler that looks like a glasspack. i have one on my aries 2.5. thing sounds like a bloody mini muscle car. but its legal in maine because it isn't a strait through unit. only thing i have to be careful about is the noise ordinance part of the law, but i think it will pass. the rest of the system is stock napa replacement w/ a couple adapters on the end to go from 1-7/8 to 2" pipe. i will install a high flow cat converter and stainless mandrel pipes when the system rots out, but for now the pipes are brand new and the original cat is rock solid.

[Tim_K]

If you're going to get a muffler shop to bend a pipe, use 2-1/2" pipe. The size decrease in the compression bends will leave it the equivalent of a 2 to 2-1/4" mandrel bent system.

And don't let a muffler shop tell you a 2-1/2" pipe won't fit in a Spirit, I have one on mine, and there's room for a 3" system in there! Going over the axle is the ONLY tight spot.

[JrVipr]

Thanks Tim K, I was talking to the exhaust guy and it would be custom bent for me. He said 2 1/2 will fit but will probably be needed to be reduced over the axle. I was debating now if I should just go with 2 1/4 mandrel bent(stainless) all the way back through a Magnaflow instead of having it reduced at the over axle side.

[csdodge]

If it were me I would go NO BIGGER then 2-1/4".

I base this off of the fact that my 3.0 L Acclaim lost torque, lost gas milage, and picked up NOTHING in the quarter mile after switching to the full 2.5" exhaust system with high flow cat and dynomax ultraflow. This same effect has been documented by countless others.

That was an expensive mistake for me.
Say it with me, "quality over quantity".

Now if you have a turbo or Nitrous planned in the future, that's different....

[capev86]

as i said - efficiency of flow, not quantity of air

just streamline out the system with 2" dia. mandrel bent pipes and low restriction cat and muffler and you are set!

[mopar2ya]

FWDP has stainless kits, but they are 2.5-3 inch, if your turbo youd be fine, if your NA then you want 2.25.