I am in the market for a fuel processor and wanted the consensus on which is the best - Cobra Fi2000R or PC5.
Thanks - G
Thanks - G
Would you say then that Cobras new approach at tuning with there latest processor would be the best route for stock to basic bolt on's for bikes like our vulcans or hondas or even harleys for that matter?I have been dealing with Power Commanders since 1997 when they were a very primitive system in their initial developement. The original units were non-user adjustable,Dynojet was sending me units to try on my TL1000S i had at the time.
Due to the Power Commander's adjustabity it is impossible for ANY engine to NOT have the proper a/f ratio.
BUT...and i mean BUT...it cannot compensate for improperly designed ANYTHING! Cams, poor quality cylinder head porting and polishing, bad exhaust or intake systems, etc. I have had MANY skoots that i get the a/f ratio correct and there are still dips and bumps and valleys in the power band that are the result of poor or mismatched components, mismatched specs or just the shape of the powerband inherent in that skoots design. If you look at the torque and power curve for a Yamaha R6 it will surprise you on how ,uh, lumpy and dippy it is.
Now this brings in my concern for those peeps having problems with the PCV and custom maps being done. The BIG VARIABLE here is the dyno operator, their interpretation of the info garnered and the condition of the equiptment used. Are the components sending the correct info. Wide band sensors out of range will show erroneous a/f ratios which may have the tuner making adjustmenst based on that bad info. If the wideband is being used with the exhaust gas pump, what is the condition of the reed valves and when was the last time the pumps were overhauled? Is the filter being cleaned before EVERY dyno session? Are the exhaust pick-up tubes (if used) routed correctly and of the appropriate lengths? What are the a/f ratios at all of the cells, and are they appropriate?
The PCV is a very good unit and has no inherent disabilities that would prevent it from doing what it's supposed to. I have found the main problem of poor running on a custom mapped skoot (especially on a mildly tuned engine
like our Vulcans) would be human and/or mechanical error. My shop has learned from our errors and mistakes, the mistakes of others and good ole trial and error.
Many years ago we had a Busa that came in with the typical pipe/air box mod/filter/ pc/ custom mapped. The performance of this skoot was horrible as described by the owner, our initial test ride and dyno evaluation. When i downloaded the map out of the PC i was in shock! This was a custom map from a shop with the bestest and the latest Dynojet dyno and technician training, i just could not believe my eyes at what was supposed to be a map!
There is pretty much no reason the proper a/f ratio cannot be met with a PCV or even the older PC3USB. Hesitations and backfiring can be attributed to problems with the engine, intake or exhaust systems, but also to problems with the custom mapping process if those other systems are in proper working order.
If performance problems are noticed after the custom mapping process and it can't be rectified, the $$$$ spent should be refunded. PERIOD.
HOPE THIS HELPS
RACNRAY