Exhaust drill out

emac86 · Post by **emac86** » Fri Jun 23, 2006 1:37 am

I have an '85 Spree. It is an Iowa model, indicated by a sticker and the VIN. It didn't look like it has been modified, but I took off the muffler to look for the legendary restrictor, but didn't see one. There are some carbon deposits on the pipe, but nothing that looks like a restrictor.

My top speed is about 26 MPH, I would like to get ~30. Would drilling a few holes in the pipe pre-muffler make a big difference in speed? in sound?

kurremkarm · Post by **kurremkarm** » Fri Jun 23, 2006 8:55 am

I can tell you that my pipe has a hole in it about midway and that it gave me more air and my spree went faster. I'm actually going to buy one from noiseguy to see if i can get up in the low to mid 30's.

Mine does 28-30 on flats at this moment depending on wind.

burnt_toast · Post by **burnt_toast** » Fri Jun 23, 2006 11:49 am

drill, but do plug chops and see how the engine is running, possible to run lean like that.

darat · Post by **darat** » Fri Jun 23, 2006 2:34 pm

and u dont want that to happend.

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