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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-22-2022, 11:44 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Aug 2013
Location: Arkansas
Posts: 51

Saturn - '01 Saturn S Sohc 5 speed
90 day: 39.37 mpg (US)

Grandma Keith - '01 Mercury Grand Marquis Ls
90 day: 21.62 mpg (US)
Thanks: 0
Thanked 21 Times in 12 Posts
Adding a capacitor to the TPS to improve mpg

I read a post recently on that social media site that referred to adding a 22-25mfd capacitor between the sensor ground and signal of the TPS sensor of a Saturn like mine.

The logic is sound. Essentially you are delivering a smaller acceleration pump shot (carb terminology) by dampening the signal to the pcm electronically. Also supposed to filter out foot jitter.

But my question to those of you more electronically savvy than me is would this make for any measurable difference in ultimate fuel consumption?

__________________
Too much junk to list. From a 10mpg caddy limo to a 5 speed Saturn



  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-23-2022, 02:40 AM   #2 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 4,640
Thanks: 2,510
Thanked 2,241 Times in 1,386 Posts
This was a mod a few years back in the Insight community. Some swore by it. I installed it and it made the car feel just a bit lazy to respond to inputs, and I couldn't measure any difference over a few months, so I pulled it.

I imagine on any cable throttle vehicle, it's really just affecting tip-in fuel. Or, in other words, with this mod it's going lean when you get on the gas, and going rich when you get off.
  Reply With Quote
The Following 2 Users Say Thank You to Ecky For This Useful Post:
mpgmike (06-04-2022), redpoint5 (05-23-2022)
Old 05-23-2022, 01:17 PM   #3 (permalink)
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 10,228

Acura TSX - '06 Acura TSX
90 day: 28.24 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.71 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
Thanks: 3,551
Thanked 3,817 Times in 2,871 Posts
Yeah, I don't know how making a sensor less sensitive is supposed to improve anything.

Maybe if someone has a jittery foot it could help something? Still don't think it would affect MPG in any measurable way.
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Old 05-23-2022, 09:33 PM   #4 (permalink)
Master EcoModder
 
Join Date: Jan 2012
Location: United States
Posts: 1,658

spyder2 - '00 Toyota MR2 Spyder
Thanks: 101
Thanked 365 Times in 280 Posts
Seems dubious, because the tip in enrichment will at most overshoot stoichiometric by a little bit for a tiny fraction of a second.
  Reply With Quote
Old 06-01-2022, 06:37 AM   #5 (permalink)
EcoModding Apprentice
 
Join Date: Jan 2009
Location: Macon,GA
Posts: 176

Ruint Taco - '19 Toyota Tacoma SR Double Cab
90 day: 23.76 mpg (US)
Thanks: 124
Thanked 43 Times in 34 Posts
You really need a flux capacitor and even then it only really helps at speeds over 88 mph.
__________________

  Reply With Quote
Old 06-02-2022, 01:35 AM   #6 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 11,064
Thanks: 0
Thanked 1,373 Times in 1,221 Posts
Quote:
Originally Posted by serialk11r View Post
Seems dubious
And potentially dangerous too.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com