www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > FAQs (Frequently Asked Questions) > TDI Power Enhancements

TDI Power Enhancements Archives on TDI Power Enhancement related items.

Reply
 
Thread Tools
Old March 29th, 2009, 13:29   #421
Bob_Fout
Oil Wanker
 
Bob_Fout's Avatar
 
Join Date: Sep 2004
Location: Indiana
Default

That's awesome Fenwick.

74 MPH at 4000 RPM, that's 3rd gear.
__________________
2003 Jetta TDI (sold) / 2015 GTI 2.0T
Photos | Mods | CJ-4 Oils | Oil Analysis | Stage II Cam
Bob_Fout is offline   Reply With Quote
Old March 29th, 2009, 13:35   #422
mojogoes
Veteran Member
 
Join Date: May 2003
Location: england
TDI(s): mk3 tdi golf
Fuel Economy: not much
Default

__________________
A3 / mk3 golf with 249Whp "Now in the hands of someone else"
mojogoes is offline   Reply With Quote
Old March 29th, 2009, 13:58   #423
fenwick458
Veteran Member
 
fenwick458's Avatar
 
Join Date: Feb 2008
Location: England
Default

yep thats 3rd gear
fenwick458 is offline   Reply With Quote
Old March 29th, 2009, 14:05   #424
Bob_Fout
Oil Wanker
 
Bob_Fout's Avatar
 
Join Date: Sep 2004
Location: Indiana
Default

Quote:
Originally Posted by fenwick458
yep thats 3rd gear
Why 3rd and not 4th? You might see higher numbers with 4th, no?
__________________
2003 Jetta TDI (sold) / 2015 GTI 2.0T
Photos | Mods | CJ-4 Oils | Oil Analysis | Stage II Cam
Bob_Fout is offline   Reply With Quote
Old March 29th, 2009, 14:40   #425
mojogoes
Veteran Member
 
Join Date: May 2003
Location: england
TDI(s): mk3 tdi golf
Fuel Economy: not much
Default

Or less!!
__________________
A3 / mk3 golf with 249Whp "Now in the hands of someone else"
mojogoes is offline   Reply With Quote
Old March 29th, 2009, 14:50   #426
IndigoBlueWagon
TDIClub Enthusiast
Principal IDParts
Vendor
w/Business number
 
Join Date: Aug 2004
Location: South of Boston
Fuel Economy: 50/45/37
Default

That's what I was thinking.
__________________
2002 Jetta wagon, 351K, RC3+; 1993 Mercedes-Benz 300D 2.5, 197K; 1997 Passat, 283K; '99.5 Golf, 255K; 2011 335d, 52K; 2015 Golf Sportwagen, 2K. Principal, http://www.idparts.com
Kid's cars: 2002 Golf TDI, 2002 Jetta TDI
IndigoBlueWagon is offline   Reply With Quote
Old March 29th, 2009, 19:36   #427
johnnloki
Veteran Member
 
johnnloki's Avatar
 
Join Date: Jan 2007
Location: bowmanville ON
TDI(s): 04 Golf TDI
Fuel Economy: 1100 km tanks, generally
Default

Quote:
Originally Posted by Bob_Fout
Why 3rd and not 4th? You might see higher numbers with 4th, no?
You'll see higher numbers in third than fourth. You're putting down a multiplied torque number in first, second and third, almost even in fourth, and a division of your torque in fifth.

If the HP# comes from your torque #, then a lower gear will give you an overly optimistic view of both.

That's why first gear becomes near unusable once you really start tuning- Too much torque, multiplied by too much.
__________________

johnnloki is offline   Reply With Quote
Old March 29th, 2009, 20:38   #428
J double R
Fail Train Conductor
 
J double R's Avatar
 
Join Date: Oct 2006
Location: Wilmington, North Carolina
Fuel Economy: 45-50 mpg
Default

Quote:
Originally Posted by johnnloki

That's why first gear becomes near unusable once you really start tuning- Too much torque, multiplied by too much.
ain't that the truth... !
__________________
Quote:
Originally Posted by meganuke
Trogdor! Burninating the TDI, burninating the peasants...

J double R is offline   Reply With Quote
Old March 29th, 2009, 21:01   #429
johnnloki
Veteran Member
 
johnnloki's Avatar
 
Join Date: Jan 2007
Location: bowmanville ON
TDI(s): 04 Golf TDI
Fuel Economy: 1100 km tanks, generally
Default

Quote:
Originally Posted by J double R
ain't that the truth... !
http://forums.vwvortex.com/zerothread?id=4291312 (@ $800- see here) http://forums.tdiclub.com/showthread.php?t=243298

+

http://www.boraparts.com/catalog/pro...roducts_id=121

=

15 different flavors of win.
__________________

johnnloki is offline   Reply With Quote
Old April 1st, 2009, 17:53   #430
Jon Linn
Veteran Member
 
Join Date: Jul 2007
Location: Fort Wayne, In
Default

Ok, this may be a stupid question, but oh well. Where do I go to have a dyno performed on my car? I would like to join the dyno club.
__________________
1997 Jetta: sold
2002 NB (my car): 160,000 miles - AltiMAX HP's, Koni S.T.R.E.T. with 2" lift and TDITuning chip.
2002 Passat 1.8t Wagon (Wifes): 125,000 miles AltiMax RT's
Jon Linn is offline   Reply With Quote
Old April 2nd, 2009, 06:09   #431
Lug_Nut
TDIClub Enthusiast
Pre-Forum Veteran Member
 
Lug_Nut's Avatar
 
Join Date: Jun 1998
Location: Sterling, Massachusetts. USA
Default

Quote:
Originally Posted by johnnloki
You'll see higher numbers in third than fourth. You're putting down a multiplied torque number in first, second and third, almost even in fourth, and a division of your torque in fifth.
If the HP# comes from your torque #, then a lower gear will give you an overly optimistic view of both.
HP comes as a product (multiplication) of torque and rpm.
Double the torque at the wheel by a lower gear and the wheel rotation speed is cut in half. 1 x 1 is equal to 2 x .5, so power doesn't change. Go up a gear, reducing torque, but the wheel rpm increases by a compensating amount. 1 x 1 is equal to .75 x 1.33, so power still doesn't change.

The difference between a lower gear pull and a higher gear pull is the amount of time needed to run from low rpm to red-line. A higher gear will take more time and reduce the effect of the turbo lag. If it takes .5 seconds for the turbo to spool up and your engine rpm rises too fast, you'll be past the natural peak before the full boost has built.
But... take too long, as might happen in a higher gear ratio, and heat soak becomes an issue.
I've done back to back 3rd, 4th, 3rd pulls and the power (wheel torque factored with wheel speed) is within fractions of a percent regardless.
__________________
If the quantity of carbonic acid increases in geometric progression,
the augmentation of the temperature will increase nearly in arithmetic progression.

Svante Arrhenius 1896

Cogito ergo soy (I think, therefore: Biodiesel)
Lug_Nut is offline   Reply With Quote
Old April 2nd, 2009, 09:22   #432
johnnloki
Veteran Member
 
johnnloki's Avatar
 
Join Date: Jan 2007
Location: bowmanville ON
TDI(s): 04 Golf TDI
Fuel Economy: 1100 km tanks, generally
Default

I suppose it depends on whether your dyno is determining the RPMs based upon engine RPMs or wheel rpms. You could definitely be right, however, especially when you factor in how many shops have trouble getting an accurate RPM reading off the engine.

Attempt #17 at PMing Jeff underway now.
__________________

johnnloki is offline   Reply With Quote
Old April 2nd, 2009, 09:52   #433
TDIMeister
Phd of TDIClub Enthusiast
Moderator at Large
 
TDIMeister's Avatar
 
Join Date: May 1999
Location: Canada
TDI(s): TDI
Default

It still doesn't matter. Power is power.
__________________

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

Are you receiving unwelcome sales solicitations or inappropriate, harassing messages in your PM? You can report them by pressing the image on the top right of the message in a similar way as reporting inappropriate posts.
TDIMeister is offline   Reply With Quote
Old April 6th, 2009, 07:16   #434
Leo__
Veteran Member
 
Join Date: Nov 2007
Location: Romania
Fuel Economy: 9 L/100km - if I'm lucky
Default

Audi A6, 1997, 2.5 TDI (5cyl), AAT 85 Kw - stock
Chip, Nozzles, Turbo (+other small stuff):
Leo__ is offline   Reply With Quote
Old April 7th, 2009, 12:58   #435
btcost
Veteran Member
 
btcost's Avatar
 
Join Date: Aug 2002
Location: Boston, MA
Fuel Economy: using Fuelly. . 33ish for now
Default

This is old. from New England Dyno day last October. but I finally learned how to post pics. . so here you go




I need to dyno again, because now I have an 11mm pump installed.
__________________
2012 JSW platinum grey, Euro mirrors, euro switch, front & rear fogs, DG Panzer plate, euro hitch, towing springs & Parktronic (not finished yet)
1987 300DT: Blistein HD's, 16" CLK wheels, euro headlights w/levelers
URL=http://www.fuelly.com/driver/Btcost/jetta][/URL]
btcost is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 04:43.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.18320 seconds with 10 queries
[Output: 127.42 Kb. compressed to 105.75 Kb. by saving 21.67 Kb. (17.00%)]