CRH07
Newbie
Last week I purchased a 2006 Yamaha Apex with an MPI Supercharger. The seller told me I am able to run a 91 octane pump fuel but when looking online I'm noticing the options are either 100% race fuel or a 50/50 mixture unless dialed down to a certain PSI. Does anyone know what it should be set at to run on premium pump gas at aprox. 900 ft elevation? The supercharger was obviously installed by the previous owner so proper tuning is not something I have any experience doing. Previous owner purchased it with 1200 miles, it now has 1829 (he was the one who put on the supercharger) so all supercharger parts have minimal usage. Any advise would be greatly appreciated. Thanks!!
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How much boost is it running?? Had it had any head gasket work or low compression pistons?
CRH07
Newbie
Haven't taken it out yet, previous owner was saying 7-8lbs. At a higher elevation though, it had the full MPI supercharger kit installed. So whatever was included in that kit was installed.. Wasn't really given a whole lot of details I just didn't think it would be so difficult..
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I would run race gas mix unless its 6lbs or under.. I have blown a head gasket at 8lbs on high octane.
CRH07
Newbie
Okay, I will lower it down a lot. Don't care to much about the power, just want it to start up and go.. Thanks!
Count the teeth on the pulleys top and bottom and I can tell you what boost it will run.
ersky
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building a custom apex
I put 1 on a 06 switched the pulleys to lower the boost 8000 miles no issues
justin gallant
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What will 6 lbs run you at for hp? 220???
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What will 6 lbs run you at for hp? 220???
More like 200 , you will loose power to make power on a Supercharger.
justin gallant
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You have one on the apex of yours don't you? Think iv seen a video of it on YouTube??More like 200 , you will loose power to make power on a Supercharger.
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You have one on the apex of yours don't you? Think iv seen a video of it on YouTube??
I do, I have 10 to 12 lbs with a head shim and it only makes like 212hp on the track Dyno at Ulmers.
justin gallant
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Still faster than a winder
I do, I have 10 to 12 lbs with a head shim and it only makes like 212hp on the track Dyno at Ulmers.
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Still faster than a winder
I dont think so.. I have never raced them..
ersky
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building a custom apex
at 6 lbs faster then a sidewinder I sold my sled to my buddy his brother had a sidewinder beat it no problem
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at 6 lbs faster then a sidewinder I sold my sled to my buddy his brother had a sidewinder beat it no problem
I can believe that, stock Winders are not all that fast.
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