SP8
Novice Class
Posts: 72
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posted September 25, 2004 12:03 PM
 Edited By: SP8 on 25 Sep 2004 13:04
SP8's TiForce Part Two..........
I almost forgot to post this over here. This is a copy of the thread I posted on ZX-10R.net. Some of you have already seen it.
Ok, some of you may remember my thread on my new TiForce exhaust. If not please refer to the link below...
http://www.bikeland.org/board/viewthread.php?FID=19&TID=14558
The next report was about my crappy custom map from this guy that blew me off at first. Please refer to the two links below...
http://zx-10r.net/forum/viewtopic.php?t=3056&highlight
http://zx-10r.net/forum/viewtopic.php?t=3102&highlight
I now know for a fact the first map was wrong at low rpm. The new guy had a brand new load control Dynojet 250 with the tuning link software. After watching both tuners I can say you want a person with a Dynojet 250 over a 200. The tuning link software is awesome. It maps the bike at various loads and throttle postions. If you live in CT or on the NY state border, I can say Dyno Solutions in Danbury CT will not do you wrong.
This first chart is stock vs.Tiforce and Akra map. I believe this is uncorrected. When I dynoed the bike with the new guy, he showed me the new charts in SAE, and standard. STD showed a peak of 161.?? while SAE was 157.14. Notice the loss of power at 6600 rpm. Also notice no A/F chart. Also note the chart says STD.
Now look below at the green line on this A/F chart below the power and torque curve. It gets a little crazy from 2000rpm to 6000rpm. He fix that and I gained a little more power and torque in that range. I lost a little from 7000rpm to 11000rpm.
TiForce exhaust for the ZX10R comes with a cone insert to boost the midrange torque. We put it in, and it gave a slight increase through out the rev range. I lost about 1.46hp on the very top. I kept the cone for obvious reasons shown on chart below.
The first run on the Dynojet 200 was a waste of $145. The custom map on the Dynojet 250 cost me $250. The 2nd dyno guy smoothed out the throttle by adding fuel a 0% throttle. What a difference that made. This bike is not snatchy, but it improved the on off throttle response big time. He said he got that trick from AMA racing tuners.
I was expecting more, but I'm not surprised at only getting 8hp on top. I've heard similiar results from the Arata system. It looks like Japan is getting better at optimizing bikes out the crate. I think my next power mod will be a thin head gasket with a skimmed head, dialed in cams, and a BMC race filter. That's after paint and suspension mods.
  
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