dyno mapping, CHECK!!!

[steven113]

Well I think I am finaly done with engine mods for my 5th gen! Just got the bike back from the shop today after getting a custom map made :)

Before mapping: Run type RO Run conditions 92.95 Degrees F, 30.47 in-Hg, Humidity 39% UNCORRECTED:1.00
MAX POWER=92.19
MAX TORQUE=51.19

After mapping: Run type RO Run conditions 85.18 Degrees F, 30.42 in-Hg, Humidity 61% UNCORRECTED:1.00
MAX POWER=98.35
MAX TORQUE=54.36

My set up:
Jardine RT1 Alunimum Pipe
Motad SS headers
K&N Air filter
PC3 USB
Custom dyno map

I wanted to post the actual chart but some thing is wrong with my scanner so this will have to do. All figures are at the rear wheel!

[Joey_Dude]

Interesting, that's very similar to a dyno run I had done a few months ago. Check out this thread for more info: http://vfrworld.com/forums/fifth-generation-1998-2001/24228-dyno-run-resultls-99-vfr.html

[CandyRedRC46]

those are really good numbers on a dynojet dyno!
especially the torque.
i wound out doing 98.64 hp and 52.21 tq before mapping
and 100.93 hp with 52.93 tq after mapping

the before run was with a map that was supposed to be perfect for my bike lol....

just curious, do you still have the snorkel and flapper etc on your bike?

[CandyRedRC46]

here's the thread:

http://vfrworld.com/forums/modificat...look-like.html

[matt1986vf500f]

that beats the hell out of my 29.9hp & 15.2 ft lbs

[CandyRedRC46]

well yours is alot lighter

[matt1986vf500f]

hoping to put down a better number soon.. just think if it made 60 hp to the rear wheel

[Alaskan]

A custom map by someone who knows what he's doing makes a huge difference, both in power and in rideability/throttle response. I bet you think it was worth the money, right?

[steven113]

those are really good numbers on a dynojet dyno!
especially the torque.
i wound out doing 98.64 hp and 52.21 tq before mapping
and 100.93 hp with 52.93 tq after mapping

the before run was with a map that was supposed to be perfect for my bike lol....

just curious, do you still have the snorkel and flapper etc on your bike?

I do still have the snorkle and flapper(not sure if 5th gens have a flapper but in anycase the airbox is all stock except for the filter) on the bike. After reading posts here on those mods I could not find anything that proved power gains could be made there and that it was more of a sound mod for the rider. John at 'Turn One Performance" really is on top of things and knew my bike well, this shop specializes in performance and race bikes but knew all off the ins and outs of my vfr as well(I couldent be more pleased!) Power and torque curves are smoother even though they were near perfect to begin with and the bike makes more power everywhere, I feel they did a top notch job and truly care about the work that comes out of their shop!

[CandyRedRC46]

thanks veefer800canuck...

Another oldie but a goodie pulled from the dusty archives of the Big VFR List:

Quote:
-----Original Message-----
From: DynoWorks@aol.com [mailto:DynoWorks@aol.com]
Sent: Monday, 29 March 1999 5:20 PM
To: vfr@cs.wisc.edu
Subject: 800 snorkel dyno test (mostly data)


Hello list ...

Had the opportunity to do a back to back dyno test on the VFR800. We'll let
the numbers tell the story.

Dynojet Model 150 Chassis Dynamometer
Eastside Harley Davidson, Bellevue, Washington
DYNORUN #1, baseline, 4th gear roll-on - 3-27-99, 3:17PM
DYNORUN #5, no snorkel, 4th gear roll-on - 3-27-99, 3:22PM

DYNORUN #1 DYNORUN #5
RPM SAE hp SAE hp
3500 28.3 28.8
4000 32.1 31.7
4500 35.4 35.4
5000 39.8 40.3
5500 45.2 46.1
6000 54.4 55.3
6500 62.6 63.2
7000 69.6 69.9
7500 75.6 75.5
8000 81.1 information not available
8500 86.6 87.1
9000 90.0 91.0
9500 91.6 92.7
10000 93.2 93.8
10500 92.9 94.2
11000 90.3 91.6
11500 88.8 89.6

Magnifying the resolution of the 500 rpms nearest the hp peak follows

10000 93.2 93.8
10100 93.4 94.1
10200 93.5 94.3
10300 93.6 94.6
10400 93.3 94.6
10500 92.9 94.2

Magnifying the resolution of the 1000 rpm range nearest torque peak follows

RPM SAE ft-lb SAE ft-lb
8100 53.4 53.3
8200 53.4 53.4
8300 53.6 53.6
8400 53.6 53.7
8500 53.5 53.8
8600 53.4 53.8
8700 53.2 53.7
8800 53.0 53.6
8900 52.8 53.4
9000 52.5 53.1

Testing conditions: 29.66 in.Hg. absolute barometric pressure, Vapor
pressure .44 in. hg., ambient air temperature 49.5 deg. F. Partly cloudy.
All stock '98VFR800FI, 3,273 miles.

Subjective comment: Noticeably louder intake noise. Doesn't sound like a
sewing machine anymore. Changes the character of the engine. Feels raw,
sharper edged. I will be leaving the snorkel out for now.

Wayne Chan, WMRRA/OMRRA #326

[CandyRedRC46]

i think that this is with out actually tuning the bike optimally for either snorkel in or out.
so it stands to reason that pulling the snorkel and tuning for it being out should be good for a solid 1-2 hp almost everywhere in the power band...
not much but there is a gain if only a small one.
and with you already having a motad and jardine you are not going to hear the intake that much... mainly just high throttle applications and low rpms...

[drewl]

Real question: this extra HP comes with a cost, no? What is your mileage like after the mods? Obviously performance is the intention going into these projects, so to the modder the expense is worth it. I pay alot of attention to efficiency, so I wonder if the performance increase costs more in fuel.

[CandyRedRC46]

come on drewl did you even read the post? lol

"Fuel milage seems to still be ok too. I made it back to Key West from Boca Raton(210 miles) on just five gallons.
42 mpg driving very hard not bad..."

[steven113]

dyno results.jpg

Here is the actual chart :)

[CandyRedRC46]

just helpin a brotha out...
deeeeeeeam thatis smooth as phuck!

[CandyRedRC46]

heres mine. shes really strong on the top end

[NorcalBoy]

heres mine. shes really strong on the top end

12k rpm redline and the engine stops making power at 10.5k? doesn't appear all that strong on top to me. 10hp drop at vtec transition....... it would appear that the tuner used a 10hp grid to make the curve appear smoother than it really is. 5hp increment grid would make that curve look a little different. a good tune will drop about 2hp at the vtec transition point. Was this an actual dyno tune or just a couple of random dyno runs?

[steven113]

heres mine. shes really strong on the top end

These look to me to be good honest #s also :) I hate that it is so hard to get extra ponies from bolt ons and tune from a VFR(I am a convert from the GSXR)bought the vfr to slow down a little and be able to make some trips on the bike. Over 100 hp is quite impressive on this bike!!! Two Thumbs Up!!!

[CandyRedRC46]

These look to me to be good honest #s also :) I hate that it is so hard to get extra ponies from bolt ons and tune from a VFR(I am a convert from the GSXR)bought the vfr to slow down a little and be able to make some trips on the bike. Over 100 hp is quite impressive on this bike!!! Two Thumbs Up!!!

thanks bro. sadly you cant empress everyone...

[CandyRedRC46]

12k rpm redline and the engine stops making power at 10.5k? doesn't appear all that strong on top to me. 10hp drop at vtec transition....... it would appear that the tuner used a 10hp grid to make the curve appear smoother than it really is. 5hp increment grid would make that curve look a little different. a good tune will drop about 2hp at the vtec transition point. Was this an actual dyno tune or just a couple of random dyno runs?

look at the air/fuel ratio. blue line before, red line after. i guess the dyno tech wasn't the best one out there. maybe i should have flown you down here and you could have done it yourself.

[Alaskan]

You have slightly more HP and torque than my 6th G makes with my custom map from EDR in Portland, OR. Mine makes 100.06 HP and about 52.4 ft/lbs. However, my map resulted in a completely flat air/fuel ratio and absolutely no dip in HP and torque immediately before VTEC transition. None. So, perhaps it's a trade-off? If you are pleased with the map, that is what counts for you. However, you definitely can map these bikes to COMPLETELY eliminate the flat spot/dip before VTEC kicks in - if that's what you want. I told my tuner I wanted a smoother curve, not highest HP/torque, so that's what I got. I'll post my chart later when I get time. It might be interesting as a comparison.

Maps/dyno runs are cheap. They are fun to experiment with and change.

[NorcalBoy]

look at the air/fuel ratio. blue line before, red line after. i guess the dyno tech wasn't the best one out there. maybe i should have flown you down here and you could have done it yourself.

I'm sorry you got a mediocre tune and paid good money for it, call me all the names and espouse all the innuendos you want, but that tune isn't optimized. My sincerest apologies for pointing that out. My thought was that you could go back and discuss it with them. it's your money and your bike. Peace.

[NorcalBoy]

You have slightly more HP and torque than my 6th G makes with my custom map from EDR in Portland, OR. Mine makes 100.06 HP and about 52.4 ft/lbs. However, my map resulted in a completely flat air/fuel ratio and absolutely no dip in HP and torque immediately before VTEC transition. None. So, perhaps it's a trade-off? If you are pleased with the map, that is what counts for you. However, you definitely can map these bikes to COMPLETELY eliminate the flat spot/dip before VTEC kicks in - if that's what you want. I told my tuner I wanted a smoother curve, not highest HP/torque, so that's what I got. I'll post my chart later when I get time. It might be interesting as a comparison.

Maps/dyno runs are cheap. They are fun to experiment with and change.

with tuning able to be accomplished at 50 rpm increments, a smooth curve through the VTEC transition and max hp and torque is attainable...as you are tuning in two distinctly different areas of throttle opening and rpm.

[Alaskan]

with tuning able to be accomplished at 50 rpm increments, a smooth curve through the VTEC transition and max hp and torque is attainable...as you are tuning in two distinctly different areas of throttle opening and rpm.

That makes sense. It's not an "either/or" situation, then.

[CandyRedRC46]

50 rpms or 250 rpms?

[Alaskan]

Another chart for comparison. Red line is the map I downloaded from the Dynojet website. Blue is the custom map.

[CandyRedRC46]

wow that air/fuel is spot on, perfectly flat! looks like my tuner doesnt have a clue with the vtec tuning. im kinda bummed out about it now. i got a decent deal, but i mean 200 bucks for a marginally better tune than the free map i got from vfrd. maybe i should have saved the dyno time money and shelled out for a pc5 and auto tune? oh well kinda late for that now...

[Alaskan]

wow that air/fuel is spot on, perfectly flat! looks like my tuner doesnt have a clue with the vtec tuning. im kinda bummed out about it now. i got a decent deal, but i mean 200 bucks for a marginally better tune than the free map i got from vfrd. maybe i should have saved the dyno time money and shelled out for a pc5 and auto tune? oh well kinda late for that now...

Custom maps aren't that expensive. This is my second one. This time I found a shop that had tuned a lot of 6th Gs. New air filter and the dyno tune was under $300. I wouldn't have spent a dime to get 2 more HP and 1 more ft/lb of torque. But I love the way the map completely removed the dip before VTEC transition. Now, when folks tell me about the flat spot before the VTEC kicks in, I don't even bother to respond. Nobody rides my bike except me, so nobody knows how smooth it is. Except me.