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8 hp is alot l gota start movin so its coffmans 4 now

I don't know unless my math is wrong factory makes 70hp to coffmans 62hp

I don't know factory claims 36% increase unless lm doing something wrong thats 70hp +8hp over coffman

What were the claims of the gen 1 and 2 pipes?

What the difference performance

How do l tell the difference in the gen 1 or 2 of pipe?

Carbs are so temperamental l drilled my carb main jet like .28 to .30 and it would barely run wouldn't idle or get on plane If its a mikuni the popoff and everything has to be right Sounds like you need to get gas into the carb aswell. Has to be between the gas and the carb

Extra pipey

Or a pjs 700cc 3 piece Nothing else makes any real power

I need a works pipe for my 650sx stat

Wish l was there, isn't that water like 86 though

You will have to adjust the zxi carb carbs, might get lucky with just one. You won't lose any reliability with a westcoast or coffmans pipe it will run better I wouldn't waste the time with stock exhaust mod They got these umi motorcross style handle bars with a crossbar and pad a little...

Use atleast one of the carbs if there 38mm kehins. You have the run for ever 28mm kehin they'll bolt right up your supposed to open the 28mm intake up with a dremel Which l would do if you get a pipe, unless you wana go 50mph you don't need a factory pipe. My o.p winged channled plate hooks up...

Worst thing was the stock exhaust

Tough decision

Which one makes the most power?

42-44mph, put a factory pipe on there and 50-51mph the stock pipe is the biggest peace of garbage