Years ago now when poor and suffering fumes inside the car; I got a muffler place in Berkeley, CA to install a straight pipe from the resonator back on my '91 Festiva 5-speed.(for $75)
About a year and a half ago I had the same place install a new resonator;(behind the catalytic converter) who I'd asked to eliminate that too who insisted I needed a little back pressure to make the car run correctly.($20/they are nice people)
The car is much more quiet than many Japanese cars with mods, in fact inside there is little evidence not stock; unless the hatchback is tied open as I once had to do with an odd sized load.
I think I get improved gas mileage and power(for a Festiva) and wonder if anyone else has an experience doing anything similar.
Just a straight pipe in place of the muffler.(I had a friend weld a chrome tip on to look "regulation" though I doubt the muffler place would've done the job if not reasonably legal which I have both receipts for)
About a year and a half ago I had the same place install a new resonator;(behind the catalytic converter) who I'd asked to eliminate that too who insisted I needed a little back pressure to make the car run correctly.($20/they are nice people)
The car is much more quiet than many Japanese cars with mods, in fact inside there is little evidence not stock; unless the hatchback is tied open as I once had to do with an odd sized load.
I think I get improved gas mileage and power(for a Festiva) and wonder if anyone else has an experience doing anything similar.
Just a straight pipe in place of the muffler.(I had a friend weld a chrome tip on to look "regulation" though I doubt the muffler place would've done the job if not reasonably legal which I have both receipts for)
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