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Discussion summary
YOUR RESEARCHFister D Mod Clarification
Leading reported evidence
Replace quote
Performed · outcome unconfirmed
No successful repair reported for this finding.
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0
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1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
I went to the shop yesterday morning, and they changed the quote on me.
Leading evidence: 'Replace quote' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace quote' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
I did the Gundo cross pipe between intake and exhaust using 1.5".
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Rennlist: 1 discussions
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Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Greetings.
I am looking for confirmation of the right size of pipe for the intake to outlet Fister D mod, as I am going to my local muffler shop for the work this Saturday.
Car is 1999 C4/MK I.
After numerous searches, I've read anywhere from 1.5" to 2.0", I also understand there was a stage 1 and stage 2 variant for the Fister D at one point, but that they only do one now. Need confirmation on the size for the mod they do today.
Thanks in advance.
guzman
Nice weld job! That's the "gundo hack" though not Fister. Fister connects inlet to outlet, Gundo connect through the muffler. From what I've read Gundo may be a little quieter than Fister. Either way they are goo, inexpensive mods.
So here's an update. A muffler shop that has been around for years in Seattle quoted me $250 for the Fister mod. I went to the shop yesterday morning, and they changed the quote on me. $450!!! "3 hours labor at $114 per hour, plus parts man."
uhh... no thanks.
Anyone know a shop in the Seattle area that will do this thing for reasonable price? If not, I'll just go with Darin's which I probably should have done in the first place..
guz
I researched this a lot. You will proabably be good anywhere between 1.5" and 2.0". I did the Gundo cross pipe between intake and exhaust using 1.5". Love it
I have a 2" set that I have considered selling to make room in my garage and I live a few miles from Seattle. I will likely sell them for $250 so you can get them and keep your original mufflers. The welds are ugly because they were done by a Porsche Tech who is not a welder but it should work. I would let you buy them and if you don't like them with 15 days you can return them for full refund (I don't think you would do this which is why I will take that risk).
The only problem is I have two out of state guys are ahead of you that get first dibbs...I am taking pictures for them later this week when I return from Asia. I will send to you as well. If they decide against it due to shipping costs, you can buy them if you are interested.
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