20HP Speedchip/Resistor
Thread Starter
|
Cross-Country
Joined: May 2006
Posts: 94
Likes: 0
20HP Speedchip/Resistor
I've seen several of these on Ebay for cheap and from the feedback they look like they work but on the Durango forum we were told to stay away from them. Any feedback on whether they work in the Ranger? Thanx 
Post Fiend
Joined: Jul 2005
Posts: 8,462
Likes: 4
From: Durant, OK (SOSU)
No...one of those usual BS schemes that regularly pop up. This has been rather discussed on here. It's good for maybe a quarter of a horse on a ideal day.
On not so ideal days, it can realllllly screw with your PCM since it's telling it it's sixty degrees when it's really not. Hard starts in cold or warm weather, poor running performance, bad warming up, etc.
RP
Zach
On not so ideal days, it can realllllly screw with your PCM since it's telling it it's sixty degrees when it's really not. Hard starts in cold or warm weather, poor running performance, bad warming up, etc.
RP
Zach
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
It's garbage. Period. The 20 HP claim is fraudulent. At best, the EEC system will adapt and render it useless. More than likely your gas mileage will suffer because of the changes the EEC system will undertake to try and accomodate for the phony readings.
Last edited by Rockledge; Jun 5, 2006 at 04:08 PM.
Post Fiend
Joined: Feb 2003
Posts: 6,940
Likes: 2
From: Eastern WA
They are just a 25 cent resistor in a *cute* plastic box that attempts to trick the ECM into thinking that the intake air temp is cooler than it really is. The concept is that the engine will run richer. But as Rock correctly noted, many ECM's will quickly relearn (because the existing sensor has tolerances on it is why there is the relearn) and it will serve no useful purpose (except for phantom HP 
).
).
Last edited by CowboyBilly9Mile; Jun 5, 2006 at 04:12 PM.
New User
Joined: Jan 2005
Posts: 9
Likes: 0
From: Higley, AZ
I acutually bought one a year ago or so becasue is cost me $4 and was worth a shot, BUT I found out that it does just what was explained above.....it basically makes your engine run in open loop.....I will give you mine if you are in AZ and you can try it for yourself!
Trending Topics
Post Fiend
Joined: Jul 2005
Posts: 8,462
Likes: 4
From: Durant, OK (SOSU)
Well in most places you need both headlights!
Remove the baffle over the intake, and fashion a ram air sort of setup.
RP
Zach
Remove the baffle over the intake, and fashion a ram air sort of setup.
RP
Zach
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Laughing Gas
Joined: Jul 2004
Posts: 1,245
Likes: 0
I tried the old "resistor trick" on the dyno about 4-5 years ago with my former 99 Mustang GT.
In short, it made no difference at all. It didn't trigger a check engine light but it didn't do anything to make any more power either. To be totally honest, given what I've seen in the code of most Ford EECs, the ACT does little more than add or subtract ignition timing. Since the MAF directly measures air mass, there's really little need for the ACT reading to determine if more fuel is needed.
Even in older speed density systems the ECT is the primary sensor for calculating air mass since it is assumed that the engine will heat the incoming air charge to a degree, thus changing its density.
In short, it made no difference at all. It didn't trigger a check engine light but it didn't do anything to make any more power either. To be totally honest, given what I've seen in the code of most Ford EECs, the ACT does little more than add or subtract ignition timing. Since the MAF directly measures air mass, there's really little need for the ACT reading to determine if more fuel is needed.
Even in older speed density systems the ECT is the primary sensor for calculating air mass since it is assumed that the engine will heat the incoming air charge to a degree, thus changing its density.
Fleet Mechanic
Joined: Oct 2004
Posts: 1,394
Likes: 104
From: Southern KS
The thing to remember with most ford fuel injection systems is that you gain power by LEANING the mixture, not making it richer. That is how all the hand held programmers do it. It is rich from the factory for safety margins.