M696 pod filter *INITIAL* dyno results...

Started by DoWorkSon, June 09, 2011, 12:30:49 PM

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brad black

one thing you'll find is that it's very hard to get any decent higher throttle results on anything other than a clear, winding road.  so get right out of town.  another is that the results can be clouded by throttle opening rate enrichment (accelerator pump).  if the autotune leans it out a lot at lower throttle openings and you get lean spots causing poor running that's generally what causes them, so be wary of that.  it can sometimes happen in one specific spot.

was it originally mapped on both cylinders or just one map for both combined?  if it was one map for both that could certainly lead to the "hard to tune" comments and to the lumpy curve.  it can be a real compromise at times, and that looks like the headers will be somewhat different in length and shape.

also any comparison to other runs is useless, so unless you have a before run your after is irrelevant to anyone but you.  i say this as the dyno i used for the last 16 years (dynojet 200) has now been replaced by a dynojet 250i and it reads maybe 6% lower.  there can be a lot of variation in dynojets even.

and that exhaust just looks like it won't work to me, so the curve shape doesn't surprise me.  not trashing the makers, but it's a physical limitation thing with what they're trying to do.  it might work better than stock, but most open things do.

this comment is the most telling though "Bike ran really strong yesterday, and seemed to have a ton more power and it just wanted to keep going. I was hitting 90mph before I even knew it... Before,"  tuning is an exact science, and it's not all about a dyno run.
Brad The Bike Boy

http://www.bikeboy.org

DoWorkSon

It was originally mapped for two cylinders.

I know it's hard to compare the two maps without actually dyno'ing one then dyno'ing the second. But, I was just posting differences of the dyne run vs the changes made by the autotune.

Why do you say the exhaust won't work?
2003 BMW R1150GS- The commuter
2009 M696--SOLD

inglese

I think these gains are awesome! Here in Italy we are not so optimistic about gains with pipes/filter/ecu mods, most people here recon that the dynos published by manufacturers are very very pimped, professional motor experts on the italian forum claim that real gains are in the order of about 2/3 HP on a 1100 with pipe/ecu/filter mod, not more.
They also say that tuners often give you what you want to see.
For example they laugh to the +10hp WASP or pods dyno's, they say it's ridiculous, totally impossible to have that kind of gain only through an air filter.
So if you really have +4hp on a 696 that's totally awesome.