my 90 astro with z motor needs a new exhaust, looking for something quiet, what has everyone else used? and need a new catalytic converter, factory? or AM?
I'm about due for a muffler on the 97, haven't looked into it yet. Most the muffler talk around here is trying to find something that sounds good, not much said about stock/quiet. I did do my CAT a few years back and went with a Magnaflow for about $100, the direct fit's (pipes included) I think are about $250-$280
For quiet choose Large capacity mufflers ,, even High Performance cars from factory use Large capacity mufflers , they flow very well and are quiet ,, take a look at the factory Gen2 muffler ,, it rather big ,,, you'll find a wide range of choices of AM choices
I just replaced my muffler only, so i cant talk about a new cat.... I dont even need one because i am exempt from smog :twisted:
I also wanted a stock replacement, took it to my trusted mechanic/welder dude, and he ordered it for me. Told him i wanted a stock replacement, didnt care about cost so long as it was quite as it has been. Well he found a stock one for like $300 and found another for $160... So I went with the $160. Its a IMCO exhaust part number OR1227. I freakin love it. It is smaller and there for is a little louder on start up, or low rpm when driving, but when at speed you dont hear it. Kind cool when i go warm up the van in the morning and drive with the stock quietness for the longer journeys i take.
Its not to loud to be annoying to you or neighbors(I think) while warming up the motor. If I had to guess on quietness, on a scale of 1-10 stock being a 9, this would be a 6 or 7(of course on low rpm). Just my experience and opinion.
If you want I could make a cheesy video of the exhaust... T dont have a real video camera, but I have a GoPro that could do the job.
Hope what ever you choose turns out great,
~Junior
EDIT: Just realized you have a Z motor and i have a W, our mufflers might not line up right... But still, best of luck dude!
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