Yamaha Star V-Max Forum :: Topic: Careful with your exhaust modifications (9/14)

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TOPIC: Careful with your exhaust modifications

Re: Careful with your exhaust modifications 10 months 3 weeks ago #81

So on the AIS mod...pretty simple...but am I blocking off just the pipe? I've got the popping on decel I would LOVE to get rid of...	Richard Hogan OFFLINE Fresh Max Posts: 33 Thank you received: 2
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Re: Careful with your exhaust modifications 10 months 3 weeks ago #82

PeaDawg wrote: I'm soooooooo confused.....is this like ground hog day? Patience Grass Hopper	VMAXD OFFLINE Gold Max Posts: 1340 Thank you received: 698
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Re: Careful with your exhaust modifications 10 months 3 weeks ago #83

Alright, alright...take it easy... Yes, I HAVE searched AIS and came up with no relevant info. I've read lot's of stuff ABOUT it, but not much technical. So...am I just blocking off the tube?	Richard Hogan OFFLINE Fresh Max Posts: 33 Thank you received: 2
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Re: Careful with your exhaust modifications 10 months 3 weeks ago #84

Gets cap'd in 3 places, I typed AIS mod into the search and got this, 1st entry.. www.starvmax.com/forum/installed-mods/13...mod-revisited#159599 Tim even has a kit for this.. guruedgear.com/index.php?dispatch=products.view&product_id=36	No_Max NOW ONLINE Platinum Max Posts: 2628 Thank you received: 2059
Lean & Mean it in every corner of your life... If it wasn't for us the fast lane would rust... V4'S are music to the seat of my pants... Get your V-Max ECU Re-Flashed to Full Power! Last Edit: 10 months 3 weeks ago by No_Max. The administrator has disabled public write access.

Re: Careful with your exhaust modifications 10 months 3 weeks ago #85

Dammit! I SWEAR I typed in the same thing! arrrrrrr...!!! Thanks, Mr. No.	Richard Hogan OFFLINE Fresh Max Posts: 33 Thank you received: 2
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Re: Careful with your exhaust modifications 10 months 3 weeks ago #86

Don`t worry Richard There`s a couple more like him Just play dumb and they will give you every bit of info you need. And some	VMAXD OFFLINE Gold Max Posts: 1340 Thank you received: 698
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Re: Careful with your exhaust modifications 10 months 2 weeks ago #87

Got a used PC and Autotune for anyone interested!!	Richard Hogan OFFLINE Fresh Max Posts: 33 Thank you received: 2
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Re: Careful with your exhaust modifications 10 months 2 weeks ago #88

What are they used for?	Kilaraipuria OFFLINE Senior Max Posts: 200 Thank you received: 63
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Re: Careful with your exhaust modifications 10 months 22 hours ago #89

Hello everyone, I'm new here.

Richard, I just got my '09 about 3 months ago and have the same conditions as you, stalling @3000-3500 rpm and the smoke at start-up (sometimes), only the smoke is from the LEFT side since I have the UFO Cat Sass/Afterburner set up where the head pipe on the left is for cylinders 2&3 (left front and right rear) so the right side is for #s 4&1, witch tells me we're both getting the smoke from cylinder #3 (each rear header crosses over to the opposite sides). The left can has more black soot than the right (= cyl 4&1) so it leads me to believe #1 is hot and lean. Also sometimes very hard to start when warmed up and will die when leaving from a stop. Very annoying.

I also have the PC-V mapped for a different exhaust system but it's all DynoJet has. I'll be asking Tim if he can re-flash my ECU because a lot of his earlier Dyno work was with the older Cat Sass Afterburner setup back in '09 (see his vmaxguru.com website). It may help with the big flat spot in the 3-3.5K range or there may be another problem. My frame number is 184, built in 12/08.

The next trick will be an AIS Mod - fairly simple.

nicksvmax
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Re: Careful with your exhaust modifications 10 months 22 hours ago #90

nicksvmax wrote:

Hello everyone, I'm new here.

Richard, I just got my '09 about 3 months ago and have the same conditions as you, stalling @3000-3500 rpm and the smoke at start-up (sometimes), only the smoke is from the LEFT side since I have the UFO Cat Sass/Afterburner set up where the head pipe on the left is for cylinders 2&3 (left front and right rear) so the right side is for #s 4&1, witch tells me we're both getting the smoke from cylinder #3 (each rear header crosses over to the opposite sides). The left can has more black soot than the right (= cyl 4&1) so it leads me to believe #1 is hot and lean. Also sometimes very hard to start when warmed up and will die when leaving from a stop. Very annoying.

I also have the PC-V mapped for a different exhaust system but it's all DynoJet has. I'll be asking Tim if he can re-flash my ECU because a lot of his earlier Dyno work was with the older Cat Sass Afterburner setup back in '09 (see his vmaxguru.com website). It may help with the big flat spot in the 3-3.5K range or there may be another problem. My frame number is 184, built in 12/08.

The next trick will be an AIS Mod - fairly simple.

What map are you running now, and what mods do you have to the intake if any? I might have map that would get rid of that flat spot for now....won't help the individual lean cylinder though.