Dynoed a stock Attack today!

[SUPERTUNER]

How do the sleds barometer measure against yours in the shop? If you need another Apex, let me know. I'm also in central mass. I met Paul last month at our dealer. Nice guy. Good luck with the tuning. I think your the first guy to anounce his findings on an open site. Cool!

Sleds have barometers??? Not quite sure what you mean MOD?

 

[SUPERTUNER]

Awsome.. Keep us informed..

Id like to see if those plugs we used in the RX-1 would yeild a HP gain and possibly some K@N filters..

Brian

I will try those today Brian. Weather conditions are identical to yesterday here. Will be a good test! I intend to also try every different mod that can be made to the stock airbox. I will share everything I learn with all of you.

Freddie

 

[Highmark]

When do you expect to test the EFI controllers? I've heard of good results adding more fuel to the EFI's.

 

[Sled Dog]

Good work Supertuner appreciate the accurate wealth of info you supply us.

 

[AIRWOLF]

How do the sleds barometer measure against yours in the shop? If you need another Apex, let me know. I'm also in central mass. I met Paul last month at our dealer. Nice guy. Good luck with the tuning. I think your the first guy to anounce his findings on an open site. Cool!

Sleds have barometers??? Not quite sure what you mean MOD?

Freddie,

there's a Barometer in the insturment cluster on the sled
push the select button to display

 

[Sled Dog]

Yes but does it have anything to do with EFI?

 

[SUPERTUNER]

When do you expect to test the EFI controllers? I've heard of good results adding more fuel to the EFI's.

The Dobeck TFI controller is back ordered. I told the gal to see if anyone has them in stock anywhere in the country and if so to drop ship it to me. I asked them to UPS second day air it to me.

If anyone has one that they would like to donate, I will accept it graciously! E-mail me at:

KliesECP@sbcglobal.net and I will give you the address or you can obatin at my website at:

www.easterncycleperf.com

Freddie

 

[yammiman]

Why are the dyno so low? - I've seen other dynos on this motor that are 148 to 149hp range @10,700 - how many miles does this motor have on it? - nothing different on this motor from the Apex is there?

 

[SledFreak]

That's what I don't get. Out of 5 dyno reports so far that I have seen, they were all slightly below or above 150 and that's not just from the magazines. Your numbers seemed to be drastically lower. If those numbers were tue, you would truly have alot of pissed off people. Also, if there is only 4 hp diff between the RX-1 and the Apex, you would barely even feel the difference and that is not the case. Something just does not add up.

 

[dirkdiggler]

Freddie what is the purpose for Dynoing the sled? Are you going to develope filters or somehting? Tell us your plans

 

[SUPERTUNER]

Why are the dyno so low? - I've seen other dynos on this motor that are 148 to 149hp range @10,700 - how many miles does this motor have on it? - nothing different on this motor from the Apex is there?

yammiman and Sled Freak... One needs to know the correction factors when comparing dynamometers. I have seen engines built by others come in here with 1.4 and 1.5 CF's! That is nearly submerged under water! That would correlate to approximately 7500 to 8000 feet above sea level. Then they put it on my dyno and get mad at me for telling them the truth.

Fact, if a dyno operator has to input the weather parameters, this opens up too many variables. How accurate is their weather station? My dynamometer has a built in weather station that tells me the CF, not the other way around. My software for my dyno was $15,000.00. I have dynoed back when they ran the 56 HP oval racing class engines designed to make 56 HP and they would come in and once we got them jetted properly would make 55 and 56 HP. We also hosted the University of Hartford for their Formula SAE competition one year and they built a race car with fuel injection on it and one of the requirements was to not be over 66 HP. The first dynorun was 64.X HP and then they leaned the fuel map and made 66.1 HP. I would have to say they knew what they were doing and I would have to say that my dyno is quite accurate. Later at the competetion, they used another dyno and it came up at 66.3 HP prior to the competetion. They richened it up on the dyno till it was actually below 66 HP and ended up in second place.

Find out what the CF's were on those dynoruns and post them here. Then we will all know if someone wasn't accurately showing the correct numbers.

Oh yea, also what type of run you make will show different numbers. An acceleration run where you start at low RPM and run to red line is the best way to get good accurate and repeatable results.

Freddie

 

[SUPERTUNER]

Freddie what is the purpose for Dynoing the sled? Are you going to develope filters or somehting? Tell us your plans

Knowing that the air filters will require more fuel, I will wait for the EFI controllers to arrive before running it too lean. Either that or maybe airbox mods? Not really sure yet but I do have some ideas.

Freddie

 

[QCRider]

if there is only 4 hp diff between the RX-1 and the Apex, you would barely even feel the difference and that is not the case. Something just does not add up.

SledFreak, even Yamaha only claims 5 hp difference. They claimed last year that the RX-1 was 145, and now they claim the Apex to be 150.

Freddie have you ever dynoed a Vector? I do remember seeing results for those that backed up the 120 claim...

 

[SledFreak]

From what I know, Yamaha claimed the RX to be 142 and the Apex to be 150. But we all know the RX-1 on every dynoed ever offered was around 137-138. This all does seemed to be interesting.... Probably why I can't beat my buddies clutched, timing key and Fuel Resticotor F7 on top end, which he says he does not think it does anything. He's lying....

 

[Mighty]

Freddie the truth detector, please tell us your thoughts on a Ram Air kit, whether or not you think it might work?? A simple design like cutting open the air box lid giving air a straight shot to the throttle bodies.
Reading your various replies you note that once you placed a fan in front of the sled with no lid on the airbox you actually picked up a few horses. But you also mentioned lean spots that have you concerned.