Leon Speed

What the heck is this crap?

http://cgi.ebay.nl/20BHP-MOD-PORSCHE...QQcmdZViewItem

SeanR

Someone who went to Radio Shack and spent 50 cents, and sells for 4 bucks.

And people buy it.

JHowell37

Solid snake oil.

Alan

I think it works the same way (and about as well) as the voltage stabilizers that were popular a year or so ago. Especially effective for your ECU's apparently (makes them work so much better!)...

https://rennlist.com/forums/showthre...eferrerid=6055

Alan

dr bob

Put in series with the oxygen sensor lead, it can "help" the performance by making the mixture a little fatter.

Very imporatnt to use a ceramic resistor, so the heat from the exhaust, travelling up the wire, will not damage the resistor. It would therefore protect the ECU from that same risk of thermal damage. A fringe benefit at no extra charge!



Gotta love this stuff!


[cue the puking noise soundtrack] [fade to green screen]

TheoJ

Bob: sure?

I would expect that they alter the MAF output voltage a little to raise the fuel mixture.
It seems an awkward way to confuse the ecu and will probably not give the pomised power increase. It can't be tuned in the right way.

O2 in serial? Nope. The load on the O2 sensor is minimal, so effect of any resistor will be minimal or none. A resistor signal-to-ground will lower the sensor output, make the O2 show a lean mixture and make the ecu to respond by adding more fuel. Again it can't be tuned properly. But I would never open the wires underneath the car. The CEB area seems so much more suitable.

A much better way is to change the maps in the LH ecu or adjust the ignition timing maps in the EZK. They call this chiptuning I believe... pick up Andrew's thread on this... VERY interesting !!!!

regards,
Theo

RyanPerrella

OH YEAH THESE TOTALLY WORK!

got like 200 mph with one of these

are you seriously asking?

Leon Speed

Yes Ryan

Jim bailey - 928 International

answered in the initial post..."crap?"

mark kibort

Yes, crap. AND, why would they help WOT hp, if the o2 circuit is ignored in an close loop control as we have with a 928?

mk

dr bob

No.

I need a tongue-in-cheek, just-kidding, pushing-the-discussion-to-an-illogical-conclusion type of smiley face symbol. I thought the puking noise and fade-to-green-screen would convince folks I wasn't serious. Sorry for the confusion.



But--

Adjusting the MAF signal with a series resistor wouldn't do anything to help, since at all mapped ranges the LH will richen again based on O2 sensor readings.