Megan Header Dyno Results - Toyota Yaris Forums

ChinoCharles · 01-02-2007, 11:28 PM

WEEEEEEEEE

130267519_423378321_0.jpg

What a fun experience man... I got to shoot the shit with the guys from Twisted Innovations and talk about this car and other cars. I learned a lot.

As far as the results, their printer was down so they are e-mailing me the sheets tomorrow. The gain was 3 or so horsepower, but that doesn't tell the whole story of what the header does. There was also a steady 3 ft/lb gain in the torque curve that came on quick and stuck around for a few thousand RPM. There was no net torque gain though. We did both runs in third gear.

It was funny... we first ran the car in fourth gear and got a whopping 125 HP to the wheels! I was so confused! As the boys said, though, "the dyno doesn't lie." It was even calibrated a couple of weeks ago, so for a second we were stumped. Then one of the guys in the shop said that some of these fuel efficient pump gas cars have two overdrives to save some MPG's. Anyone know if that is the case with the Yaris?

The third gear runs had us in the 105 HP range. I'm sure if we had done the tests in first gear we would have been in that 70-80 WHP range that is documented. Either way, we got the gains.

The guys at TI seemed excited about the prospect of having the car in their shop, and hopefully I will be working with them to develop some more parts for the car. You'll see threads popping up in the appropriate forums meant to gague interest in certain parts. If you see something posted that you would like to be on the market, post in the thread, because they're watching.

I'll post the actual sheets tomorrow.

vodkalush · 01-02-2007, 11:32 PM

cant wait for the print outs! Like I said in the GB thread I wish i had the extra cash during the GB....

Nutzoids · 01-03-2007, 12:17 AM

Congratulations man… I am beyond Jealous!

acrbill · 01-03-2007, 12:29 AM

They are correct, 4th and 5th are overdrive gears. 105WHP is super strong considering the Scion guys are around 78whp.

spkrman · 01-03-2007, 01:39 AM

wow 105 to the wheels???

this is a swap from the stock header to the megan, while retaining your other mods...which your mods are all listed in your sig?

Katana · 01-03-2007, 05:37 AM

Great results!

Notthy[Yaris/S]07 · 01-03-2007, 10:08 AM

105? awsome

redglare45 · 01-03-2007, 10:58 AM

Sweet! Can't wait to see the dyno sheet

ChinoCharles · 01-03-2007, 11:28 AM

Quote:

Originally Posted by spkrman

wow 105 to the wheels???

this is a swap from the stock header to the megan, while retaining your other mods...which your mods are all listed in your sig?

105 to the wheels in third gear. In fourth gear she puts 125 to the wheels! HAHA. I'l bet if she actually could get air in and out third and fourth gear would be really fun!

And yes, my mods are all listed in my sig.

eco · 01-03-2007, 11:36 AM

Only 3 ponys more,Im sorta let down,was hoping atleast 5.Well my car is in the shop today to get its ne custom 2.5" cat back,plus the header is being installed,I wish I could get my hands dirty on this one,but I curently have no welder,and I figured let them get the header while theyre at it.I have no dyno that I know of near me,I would love to actuall see some final numbers when Im done,I just might have to get them done at the NOPI car show next year.

Fastnx · 01-03-2007, 02:56 PM

It sounds like they were not using a pickup to read actual RPM.

A properly set up dyno reads the engine's RPM so gearing does not matter. whether you are in first, second, third, fourth or fifth gear, the dyno will know the RPM the engine is at, instead of just guessing.

Since going from 4th gear to 3rd gear yielded a lower power reading, this makes me think they are not using an RPM pickup. The hp numbers appear to be lower since the wheel speed is lower (hp=rpm*tq/5252).

The 105 at the wheels number is obviously not accurate, there is no way there is only a 3hp driveline loss. This means the 3hp gain that was noticed is also slightly overstated. Perhaps 3hp at the crank is a more accurate figure.

Either way, I am glad to see positive gains. Looking forward to seeing the dyno graph.

ChinoCharles · 01-03-2007, 03:27 PM

They were using a pickup to read RPM's. By the way, I had to giggle when I saw she idles at 600 RPM. Wow.

I'm still dying for someone to explain the differences in HP from gear to gear... or just confirm that the car has multiple overdrives.

CASTREX · 01-03-2007, 03:39 PM

Get those graph posted asap! I agree those numbers dosen't sound right. The HP's shouldn't go up and down when changing gears. Did this dyno concidered the atmosferic variables for correcting horsepower and torque to a known standard?

riceboy · 01-03-2007, 08:30 PM

Can't wait to see the data sheets...

ChinoCharles · 01-03-2007, 08:38 PM

Yeah, I just called and the shop is closed. They must have taken the night off... they were there until 11 PM last night, so I could understand. Looks like y'all sit in suspense for another day! HAR HAR!

nevermorez · 01-04-2007, 01:00 AM

Damnit, I just missed the Megan Header GB. Can I still get one though? Where should I buy it from?

ChinoCharles · 01-04-2007, 01:02 AM

Get the NST crank pulley instead. Better gains for the money.

Oh, and when you do get the header, get it from the generic seller on Ebay. Its a tad cheaper.

http://cgi.ebay.com/ebaymotors/Perfo...spagenameZWDVW

nevermorez · 01-04-2007, 01:09 AM

Quote:

Originally Posted by ChinoCharles

Get the NST crank pulley instead. Better gains for the money.

Oh, and when you do get the header, get it from the generic seller on Ebay. Its a tad cheaper.

http://cgi.ebay.com/ebaymotors/Perfo...spagenameZWDVW

Pardon my ignorance. Wut does crank pulley do actually. I thought header was a must upgrade for yaris.

01-02-2007, 11:28 PM	#1
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	Megan Header Dyno Results WEEEEEEEEE 130267519_423378321_0.jpg What a fun experience man... I got to shoot the shit with the guys from Twisted Innovations and talk about this car and other cars. I learned a lot. As far as the results, their printer was down so they are e-mailing me the sheets tomorrow. The gain was 3 or so horsepower, but that doesn't tell the whole story of what the header does. There was also a steady 3 ft/lb gain in the torque curve that came on quick and stuck around for a few thousand RPM. There was no net torque gain though. We did both runs in third gear. It was funny... we first ran the car in fourth gear and got a whopping 125 HP to the wheels! I was so confused! As the boys said, though, "the dyno doesn't lie." It was even calibrated a couple of weeks ago, so for a second we were stumped. Then one of the guys in the shop said that some of these fuel efficient pump gas cars have two overdrives to save some MPG's. Anyone know if that is the case with the Yaris? The third gear runs had us in the 105 HP range. I'm sure if we had done the tests in first gear we would have been in that 70-80 WHP range that is documented. Either way, we got the gains. The guys at TI seemed excited about the prospect of having the car in their shop, and hopefully I will be working with them to develop some more parts for the car. You'll see threads popping up in the appropriate forums meant to gague interest in certain parts. If you see something posted that you would like to be on the market, post in the thread, because they're watching. I'll post the actual sheets tomorrow. Last edited by ChinoCharles; 01-03-2007 at 12:00 AM.

01-02-2007, 11:32 PM	#2
vodkalush I drive a yarrrris View User's Garage Drives: 07 Sedan Polar White Join Date: Sep 2006 Location: Rochester, NY Posts: 1,009	cant wait for the print outs! Like I said in the GB thread I wish i had the extra cash during the GB.... __________________ Docotrs say all the drikning has mesesd up my seplilng and radieng Get your YarisWorld.com stickers here!!! The Official Toyota Thailand Accessories Order Thread will work for parts

01-03-2007, 12:29 AM	#4
acrbill Drives: Polar White Hatch Join Date: Nov 2006 Location: chicago Posts: 407	They are correct, 4th and 5th are overdrive gears. 105WHP is super strong considering the Scion guys are around 78whp. __________________ ChinoCharles Intake supporter.

01-03-2007, 05:37 AM	#6
Katana Drives: Yaris LB 1.3lt 06 Join Date: Aug 2006 Location: Under the hood! Posts: 1,124	Great results! __________________ It's not the ride, it's the rider!

01-03-2007, 10:08 AM	#7
Notthy[Yaris/S]07 View User's Garage Drives: Yaris Sedan 07 Join Date: Sep 2006 Location: Puerto Rico Posts: 31	105? awsome __________________ *My Ride From Puerto Rico Yaris Sedan* 07 - MODS** - 20% Tints Tanabe NF2210 Suspension Two AudioPipe 12 Inches for Bass with 1000 Watts Amp BOSS 17 Inches Rims Ground Wire

01-03-2007, 12:17 AM	#3
Nutzoids View User's Garage Drives: 07 Yaris Liftback Join Date: Nov 2006 Location: Philadelphia Posts: 938	Congratulations man… I am beyond Jealous!

01-03-2007, 01:39 AM	#5
spkrman Banned View User's Garage Drives: 1 Join Date: Nov 2006 Location: 2 Posts: 1,476	wow 105 to the wheels??? this is a swap from the stock header to the megan, while retaining your other mods...which your mods are all listed in your sig?

01-03-2007, 10:58 AM	#8
redglare45 View User's Garage Drives: 07 Sedan - 5 Speed Manual Join Date: May 2006 Location: Pomona / Pasadena, California Posts: 337	Sweet! Can't wait to see the dyno sheet

01-03-2007, 11:36 AM	#10
eco Drives: 2007 Black Yaris sedan Join Date: Sep 2006 Location: Atlanta Posts: 884	Only 3 ponys more,Im sorta let down,was hoping atleast 5.Well my car is in the shop today to get its ne custom 2.5" cat back,plus the header is being installed,I wish I could get my hands dirty on this one,but I curently have no welder,and I figured let them get the header while theyre at it.I have no dyno that I know of near me,I would love to actuall see some final numbers when Im done,I just might have to get them done at the NOPI car show next year.

01-03-2007, 02:56 PM	#11
Fastnx Drives: Nissan NX2000 Join Date: Nov 2006 Location: Canada Posts: 12	It sounds like they were not using a pickup to read actual RPM. A properly set up dyno reads the engine's RPM so gearing does not matter. whether you are in first, second, third, fourth or fifth gear, the dyno will know the RPM the engine is at, instead of just guessing. Since going from 4th gear to 3rd gear yielded a lower power reading, this makes me think they are not using an RPM pickup. The hp numbers appear to be lower since the wheel speed is lower (hp=rpm*tq/5252). The 105 at the wheels number is obviously not accurate, there is no way there is only a 3hp driveline loss. This means the 3hp gain that was noticed is also slightly overstated. Perhaps 3hp at the crank is a more accurate figure. Either way, I am glad to see positive gains. Looking forward to seeing the dyno graph.

01-03-2007, 03:27 PM	#12
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	They were using a pickup to read RPM's. By the way, I had to giggle when I saw she idles at 600 RPM. Wow. I'm still dying for someone to explain the differences in HP from gear to gear... or just confirm that the car has multiple overdrives.

01-03-2007, 03:39 PM	#13
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Get those graph posted asap! I agree those numbers dosen't sound right. The HP's shouldn't go up and down when changing gears. Did this dyno concidered the atmosferic variables for correcting horsepower and torque to a known standard?

01-03-2007, 08:30 PM	#14
riceboy Drives: icebox Join Date: Apr 2006 Location: CAN Posts: 1,003	Can't wait to see the data sheets...

01-03-2007, 08:38 PM	#15
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	Yeah, I just called and the shop is closed. They must have taken the night off... they were there until 11 PM last night, so I could understand. Looks like y'all sit in suspense for another day! HAR HAR!

01-04-2007, 01:00 AM	#16
nevermorez Drives: 2006 Yaris RS Join Date: Feb 2006 Location: Vancouver Posts: 61	Damnit, I just missed the Megan Header GB. Can I still get one though? Where should I buy it from?

01-04-2007, 01:02 AM	#17
ChinoCharles Banned Drives: LB Join Date: Jul 2006 Location: OH Posts: 7,787	Get the NST crank pulley instead. Better gains for the money. Oh, and when you do get the header, get it from the generic seller on Ebay. Its a tad cheaper. http://cgi.ebay.com/ebaymotors/Perfo...spagenameZWDVW

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