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  #1  
Old April 12th, 2011, 10:40 PM
dsh12
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Daniel Hayes
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Complete Exhaust Replacement $$?

What is the best price on a complete stock exhaust replacement for a 3.9 94 D90? Is there really any performance (mpg) improvement grained from paying up for the more expensive upgrades?

Thanks,
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94D90 NAS 3.9 LT77 LT230T Soft Top

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  #2  
Old April 12th, 2011, 11:24 PM
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barry f
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Do you need a full system or just cat back?
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  #3  
Old April 13th, 2011, 01:05 AM
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Don't waste your money on exhaust if you're chasing performance. If you want a nice, non-rusty exhaust that's tucked up out of the way, then go the custom route. I had a custom Y-pipe setup made locally. They used some "high performance" cats, whatever that means. They tuck up nicely out of the way and my exhaust is no longer a rusty pile of shit. Cost: about $900.
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  #4  
Old April 13th, 2011, 12:09 PM
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Daniel Hayes
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Quote:
Originally Posted by bjf View Post
Do you need a full system or just cat back?
Full System.
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  #5  
Old April 13th, 2011, 12:36 PM
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Tony Sims
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Quote:
Originally Posted by chris snell View Post
Don't waste your money on exhaust if you're chasing performance. If you want a nice, non-rusty exhaust that's tucked up out of the way, then go the custom route. I had a custom Y-pipe setup made locally. They used some "high performance" cats, whatever that means. They tuck up nicely out of the way and my exhaust is no longer a rusty pile of shit. Cost: about $900.
Wow, was most of that the cats, or was it stainless? I've had full exhausts done for a lot less than that. Had a system built for an old BMW coupe for about $300 that is similar work and content to a Landy system less the cats -- two downpipes with flanges, y'd into a single 2.5" to the back with a Magnaflow and a nickel tip.

You can buy universal fit cats from Summit for $60-$90 each.
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
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This is straight out of the Manual for Build Builders.
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  #6  
Old April 13th, 2011, 03:32 PM
dsh12
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Daniel Hayes
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Originally Posted by TS888 View Post
Wow, was most of that the cats, or was it stainless? I've had full exhausts done for a lot less than that. Had a system built for an old BMW coupe for about $300 that is similar work and content to a Landy system less the cats -- two downpipes with flanges, y'd into a single 2.5" to the back with a Magnaflow and a nickel tip.

You can buy universal fit cats from Summit for $60-$90 each.
Was the Magnaflow included in the $300? Who did the work?
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  #7  
Old April 13th, 2011, 03:56 PM
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Craig Dickson
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I just had new performance cats, a stainless Magnaflow muffler, and tail pipe section from the muffler back put on a few months ago. Cost $900. I was surprised at the performance gains. I did not expect anything other than a better sound.

What I found was that now on my daily commute there are hills that I would have normally had to downshift to 4th gear I can now stay in 5th gear. I find myself running around in 5th gear more and turning 2,000 rpms instead of running in 4th at 2,500 rpms.

Because I get reimbursed for mileage I am constantly resetting my odometer so I do not know if I am getting any better gas mileage.

I am thinking that my old cats must have been partially plugged and that is why the new system allows for better performance.
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  #8  
Old April 13th, 2011, 05:52 PM
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Daniel Hayes
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Quote:
Originally Posted by Craigd View Post
I just had new performance cats, a stainless Magnaflow muffler, and tail pipe section from the muffler back put on a few months ago. Cost $900. I was surprised at the performance gains. I did not expect anything other than a better sound.

What I found was that now on my daily commute there are hills that I would have normally had to downshift to 4th gear I can now stay in 5th gear. I find myself running around in 5th gear more and turning 2,000 rpms instead of running in 4th at 2,500 rpms.

Because I get reimbursed for mileage I am constantly resetting my odometer so I do not know if I am getting any better gas mileage.

I am thinking that my old cats must have been partially plugged and that is why the new system allows for better performance.
What was the Magnaflow muffler & cats model number?
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  #9  
Old April 13th, 2011, 06:05 PM
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barry f
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Also could do the whole NRP set up from RN.
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  #10  
Old April 14th, 2011, 03:39 AM
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Tony Sims
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Quote:
Originally Posted by dsh12 View Post
Was the Magnaflow included in the $300? Who did the work?
Yes, muffler included. It was at a muffler shop near the airport in Portland, OR, about 5 years ago.
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[appropriated from Ren Ching] Most faults can usually be traced to the badge on the grill.
Quote:
Originally Posted by chris snell
This is straight out of the Manual for Build Builders.
Tony
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  #11  
Old April 15th, 2011, 01:30 PM
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Craig Dickson
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Dan,
Just talked to my muffler guy and the part numbers are

Magnaflow muffler #12256

The cats are from a company called Imco and the numbers are

Left side #650305
Right Side #650005

Apparently the Imco cats are only available through custom shops so you will have to get them through a shop that uses them.

My muffler guy does not use Magnaflow cats as they were having troubles with them and he likes the Imco cats better or so he says.
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  #12  
Old April 16th, 2011, 05:13 PM
dsh12
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Daniel Hayes
1994 Defender 90 Soft Top
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Quote:
Originally Posted by Craigd View Post
Dan,
Just talked to my muffler guy and the part numbers are

Magnaflow muffler #12256

The cats are from a company called Imco and the numbers are

Left side #650305
Right Side #650005

Apparently the Imco cats are only available through custom shops so you will have to get them through a shop that uses them.

My muffler guy does not use Magnaflow cats as they were having troubles with them and he likes the Imco cats better or so he says.
So its 2 1/4 off of each manifold 'Y'ed into a single 2 1/2 to the muffler?
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  #13  
Old April 18th, 2011, 01:31 PM
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Craig Dickson
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Yes a y pipe into a single muffler
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