> I'm starting to wonder if it has a cam and/or chip, since the 60kmi '91 model > we just bought has significantly less power than the '90 that gets "poor" > MPG.
Could be, but my car actually got better gas mileage with a chip and intake cam. > The 90 GLI I have now has 2 throttle microswitches (m/s), one for idle and > one for full throttle. Both are mounted on top of the throttle body (t/b) > assembly. You can hear an audible "click" when they are engaged. The 91 > we're buying (picking up this weekend) has the m/s on the bottom of the t/b. > I can only hear a click for the idle switch. The Bentley manual says there > were several iterations of the Motronic injection, and "some EARLY 2.0L 9A > motors may only have a single idle m/s" (emphasis mine). Now, my 90 has 2 > m/s, and the 91 has 1 m/s. Sounds like the opposite of the Bentley manual. > What gives? Are the "dual m/s" motors more desireable due to the full > throttle enrichment? Or does the computer sense "full throttle" some other > way on "single m/s" systems and enrich the mixture anyway? The manual was > NOT helpful with this. Or, is it possible I have 2 m/s and the full throttle > one isn't "clicking"? It's impossible to see underneath the t/b without > removing it. My car has 2 switches on top of the TB. My guess is that the 2 switch system is for CA, and the single switch system is 49 state. Do both, or either car have EGR? I think the non CA cars didn't come with EGR... > Would this affect the computer chips, i.e. would a single m/s > brain box require a different chip than a dual m/s system? I'm sure the ECU's are different for each system. That's why the guys who sell chips always want to know the P/N off of your particular ECU, in order to insure they sell you the correct program. --Holland Forced Failure Racing Don't Ask MotorSports [email protected] a2_16V List Owner [email protected] San Jose, California _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
