Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-26-2008, 01:34 PM   #11 (permalink)
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 18
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by Matt Herring View Post
- UP TO 70+ FT. LBS. of Torque

- UP TO 70+ Horsepower
Bwahahahahaha...

Of course, the way it's written, it doesn't say you'll gain 70 horsepower, just that you'll have over 70 horsepower when done. That's not much of a stretch for any vehicle!

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-26-2008, 04:47 PM   #12 (permalink)
Master EcoModder
 
ttoyoda's Avatar
 
Join Date: May 2008
Location: boston ma
Posts: 381
Thanks: 0
Thanked 5 Times in 5 Posts
Quote:
Are you suggesting pulling up the signal with a voltage gain?
With an offset. Up or down, I always get confused which way is lean and which way is rich..It is always the opposite of the opposite in my head, anyway. and I always have to look it up again.

I mention it for two reasons, one, I have read about it being done(never done it myself), two, I have seen a toyota technical service bulliten which talks about "oxygen sensor offset", where an oxygen sensor will develop a permanent shift of what voltage it gives out when the ratio is stochiometric (sp?). Now in the toyota TSB they look at this as a problem, because the mixture is not where toyota wants it, and they show how to look at the waveform with a scope to detect the issue.

I would think if you wanted to try it, a single 1.5 volt d cell battery, with a 10 or 20 turn variable resisitor (pot) of perhaps 10K ohms or 100K ohms around it as a divider (not just in series) so you could adjust the output voltage, would work. If you wanted the ability to go BOTH positive and negative, then 2 D cells in a bridge with the pot (again as a divider, not in series) would allow you to go either way, with the pot center as zero offset. D cells should last about forever in this application, but I expect they will change voltage slightly with ambient temperature/phase of moon/whatever. If you decide to try this, Whatever you do, start at very low voltage offsets and move up cautiously, you dont want to hurt anything.

Just an FYI, I have been soldering wires to the ends of D cells for a long time now to avoid the eventual but inevitable contact problems you can get at very low current flows. If you want to try it, first make a wetted puddle of solder on the d cell, then come back later and put a tinned wire in the puddle. Work quick and you won't heat the d cell much. Wear glasses etc. if you are worried about rupture, but my *opinion* is that there is not much risk if you work quick.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Perhaps honda specific: Will a code 41 (o2 sensor heater) tank my mileage? SVOboy Off-Topic Tech 13 08-04-2008 09:35 PM
WTB: Honda 5-Wire O2 SVOboy For Sale 0 06-15-2008 04:30 PM
How to test O2 Sensor? SirKeats DIY / How-to 3 05-28-2008 12:25 PM
Running "Lean" with a Resistor Divider on the Air Temp Sensor steensn EcoModding Central 22 05-16-2008 09:11 AM
WTB: 1 wire o2 SVOboy For Sale 8 05-11-2008 06:01 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com