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Discussion Starter · #1 ·
Quick results with stock header, running 93 octane.

Stock Exhaust and tune - 110.31 hp.
Zard silencer - 119.34 hp
Chain Reaction Moto dual silencers - 119.78 hp

Graphs to follow soon.


We swapped to the modified header, and the oxygen sensor on the dyno failed. So the tuning ended for the day. :-\
Back on the dyno tomorrow. More headers and even more exhausts. 8)
 

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Glad to hear the update! Keep us posted. I have been thinking about this off and on all day today.

:popcorn: :popcorn: :popcorn: :popcorn: :popcorn:
 

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Discussion Starter · #7 ·
dr_gallup said:
Very interesting. Waiting to see the torque curves. Were these with stock tune?
Torque varied from 73.44 to 74.55 ft-lb - most pulls had 74.3+ ft-lb. I don't remember the torque with stock set up, but I want to say it was around 68 ft-lb. All peaked at 7800 rpm.
Peak power for the stock exhaust/tune occurred at 9100 rpm. For the others it peaked at 9400 rpm.

Most pulls were repeatable, but occasionally I got a single run that was 1-1.5 hp higher than the other runs if the bike was allowed to cool off for a while between runs. These were disregarded, so the results above do not show the actual best runs from each exhaust, only the average of back to back runs - just like you ride in real life. No dyno BS games trying to show high numbers for the sake of bench racing. I want to make sure that others can get the same numbers with the same tunes, and that the bikes run good.

I will print a bunch of graphs today, and scan them for posting.

Air temp 88 degrees F.

Not stock tunes other than with stock exhaust.

CB and I are getting very good at swapping exhausts on the dyno. The stock one gets VERY HOT! We were able to remove the header and replace it with the modified one without loosening the oil cooler lines - big cooler on 2005 bike.

We were surprised at the 110 hp with the stock exhaust - I expected a bit more, but it was HOT in the shop. I ran the Zard with the TORS tune on two pulls - 117+ hp. About 2.5 hp were gained with tuning, and the mid-range really woke up.

My impressions of sound: Comparing the Zard sound to the Chain Reaction Moto (CRM), the Zard is raspier. The CRM is throatier sounding. The Trident (carbon half system) is considerably deeper sounding than either - possibly louder as well, but not nearly as attention getting as the raspy Zard. I can see the Zard attracting attention from police.

With the modified header, the sound is definitely deeper and louder. The bike immediately sounds cleaner at idle and through the power band.

Running a non-SAI tune in a bike with SAI, and the modified header with Zard silencer POPS AND BANGS LIKE CRAZY on deceleration. I think CB scared the crap out of several motorists on the test ride. ;D

CB is finding out how much attention the Speed Triple gets around here. He had lots of looks and even several cagers asking questions while he was stopped in traffic. You all know the normal questions. ;)
 

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I am really surprised that the Zard made less HP than the Chainreactions, even if it was a negligible amount. Was that the Zard slipon, or the full Zard system?
 

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Shoulda read more closely.

Still surprising. In theory the Zard should flow better (less bends = better flow) but perhaps it has something to do with total exhaust length and back pressure harmonics. I know .44 HP is statistically insignificant.

I will be really curious to see the modified header numbers with both.
 

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>>I can see the Zard attracting attention from police.<<

Ahem...so far so good! ;D


I completely concur with your thoughts on sound/tone and volume differences DVS - Trident 1/2 sys is bass-ier and Zard much raspier (has a real bark to it on a blip of the throttle from idle that turns heads :) )

I too have noticed that the coated header with the pre-cat removed is that much louder than it was prior to modification

Light concern that the O2 sensor failed with the modded header - they aren't cheap to replace (GBP 104 over here and fiddly as it's a tank off job) - I know only because I screwed up the wires on mine and am on my second one already. But I was wondering if there would be any side-effect from coating the header as it occurs to me that this allows heat to travel further back through the system easier

Thanks for the update - excited to hear that it's a good mid-range effect that a tune gives - TBH that's really what I was hoping to hear as IIRC the manuf's tend to tweak [restrict] this area for emmissions regs testing on mass produced machines - and this bike is all about that mid-range pull IMO - cant wait to read more - Cheers
Ash
 

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HarriS said:
With the stock header the worst flowing part is the baffle in the collector. With that in place, it is pretty much one and the same what you have downstream.
True, but there has to be something causing the difference in HP. When I was running the Jardines and the TOR tune I was making 116 HP on the dyno. That's on the stock mid pipe. (Different dyno of course). Unfortunately I never got a baseline to compare it with.

Dang, I'm sitting here rubbing my hands together and muttering evilly. Heh heh heh.
 

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blackb1ade said:
>
Light concern that the O2 sensor failed with the modded header - they aren't cheap to replace...
He's not talking about the O2 sensor on the bike, but the broadband 02 sensor on the Dyno. Yes expensive, but not bike related.
 

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I dont doubt that I was raped for it, but needs must and all that (bloody rip-off though)

Aaaaaah, thanks Crashmasterd, didn't realise that - (that's a relief )
 

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Devious said:
I forgot to mention:

I HATE SAI!
Move to Australia :wave: No SAI or pre-cat over here (actually I'm not 100% on the pre-cat, I'll have to get back to on that one).

That aside you guys are doing a great job and looks like your having great time as well.

Keep it up :popcorn:
 

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Discussion Starter · #18 ·
***UPDATE***
After the wideband oxygen sensor failed on the dyno on Friday, we spent all morning trying to locate one. Finally found a source with one in stock, but it would not get here until the cycle shop closed! So Tuesday morning I will go in and check that the dyno is up and running, and reschedule ASAP.

The nice thing is that the Zard and the low mount CRM seem to tune the same, so all of this will still get done within the week.

CheapBastard left here with a modified header, and an incomplete tune that rides VERY nice, but only showed 122.32 hp and 74.55 hp on the dyno.

I have a feeling that since the Zard silencer necks down the flow abruptly after the header, it is causing some restriction that is limiting power. I will know for certain very soon. On Tuesday, I will print and post graphs for the stock header.


So instead of spending the day tuning, HiVel and I spent some time with him showing him the back-roads and having a late lunch at 29 Dreams cycle resort.

After hearing the Zard and CRM exhausts, I like the sounds they make - quite a bit. But I still think the Trident carbon half system sounds WAY better.
 

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Thanks for all the work guys. Too bad you couldn't finish the test plan. Mice & men yada yada yada.

I found the sound comments quite enlightening. First time anybody has made a direct comparison. Glad I have the C/F Trident 1/2 system from the sound of it.
 
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