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Well I finaly got my Stryker dynoed today. It was a nise 89deg in the dyno room too:yuck:. Any way the numbers aren't what I wanted to see. I perdick that we all can get 80Hp for 80 cubes on this motor with a little more TQ. First the dyno guy striped my O2 sensor and we had to take off my cobra TRI-FLO exhaust off and retapp the O2 sensor bunge to get his O2 sensor in to get afuel reading since he could not get the sniffer rod into my non removeable baffel. After a 1 hour set back my stryker was ready for the dyno run.I had to stay in the front when he did that, Guess because of insurance reasons but let me help him taking off and installing my $650 dollar exhaust so he would not scratch it. Then he called me in to see the graph of the fuel mixture. I was running mostly lean and it had a bunch of dips and one section was rich then lean again. he would not adjust the EJK and of course knocked it and also said the Cobra power pro and power commander auto tune did not really work
. he also said he definitly can get me 5more HP and probably TQ if I install a power commander and he tunes it up correctly and index each cylinder . I believe him on the fuel mixture an am no stranger to dyno runs and mixture and what just one jet size difference (+ -) on a carb can do. I wish I could have done just a couple of settings on my EJK , but that means the cost of another pull for each test $$$$. So my numbers are 75.80HP and 79.43TQ. The TQ curve is flat as kansas. This was the first dyno run on a Stryker or any 1304CC Yamaha and he was impressed with the power to cc ratio ,which is what I keep saying. He does mostly sport bikes and does alot of hardleys and alot of M109'S. So Im at a delima kinda. Do I want to spend $ on a power commander then another $375.00 for a custom tune for 5 more HP? Not sure yet. wish I knew another dyno shop that actually knows the Bully or EJK tuners. He said im running leaner than I should be. I feel my Stryker as is runs pretty good, but by the fuel mixture I looked at closley (you can't see it on the graph) Im in for some improvments I most likely will feel.I guess Im going to wait it out for a bit. Spent enough this month on my toys. But I do want to break that 80Hp barrier just for ****s and giggles:wink:. He also mentioned that his dyno has a reputation for being 3hp less that where the other sport bike riders are going, he didn't say where. But i just want a base line before I tear down the heads this winter, of course he wanted to take a try at porting the heads also. they do alot of that their on the four valve Yamaha sport bikes. So that is it for now.My mods are,cobra tri-flow exhaust,cobra power flow with the front screen removed and the EJK. Till next time at the Dyno:thumb:.
. he also said he definitly can get me 5more HP and probably TQ if I install a power commander and he tunes it up correctly and index each cylinder . I believe him on the fuel mixture an am no stranger to dyno runs and mixture and what just one jet size difference (+ -) on a carb can do. I wish I could have done just a couple of settings on my EJK , but that means the cost of another pull for each test $$$$. So my numbers are 75.80HP and 79.43TQ. The TQ curve is flat as kansas. This was the first dyno run on a Stryker or any 1304CC Yamaha and he was impressed with the power to cc ratio ,which is what I keep saying. He does mostly sport bikes and does alot of hardleys and alot of M109'S. So Im at a delima kinda. Do I want to spend $ on a power commander then another $375.00 for a custom tune for 5 more HP? Not sure yet. wish I knew another dyno shop that actually knows the Bully or EJK tuners. He said im running leaner than I should be. I feel my Stryker as is runs pretty good, but by the fuel mixture I looked at closley (you can't see it on the graph) Im in for some improvments I most likely will feel.I guess Im going to wait it out for a bit. Spent enough this month on my toys. But I do want to break that 80Hp barrier just for ****s and giggles:wink:. He also mentioned that his dyno has a reputation for being 3hp less that where the other sport bike riders are going, he didn't say where. But i just want a base line before I tear down the heads this winter, of course he wanted to take a try at porting the heads also. they do alot of that their on the four valve Yamaha sport bikes. So that is it for now.My mods are,cobra tri-flow exhaust,cobra power flow with the front screen removed and the EJK. Till next time at the Dyno:thumb:.
