Is my fuel enrichment working?

[amalventano1@home.com (Allyn)]

As you get past 6k, the factory cams become the bottleneck, and you end up not gaining much more
mass of air in the cylinders as your rpm goes up. Also, the factory design of the airflow sensor
plate doesnt tune it properly for ops at >6k, thus slightly leaning out the engine (better for
emmisions, but not for power). A power module will fix the leaning part, better cams will solve the
airflow problem. The rieger has only cams (no power module) and pulls harder and harder up to about
5500. It starts to fall off past that, but its not a noticable power loss. I dont stay up that high
very much, except on the occasional nice long pull to 105 in 3rd (nice on an entrance ramp). Gotta
love that FN.
Al

Allyn Malventano, ETC(SS), USN
87 Rieger GTO Scirocco 16v (daily driver, 170k, rocco #6)
86 Kamei Twin 16V Turbo Scirocco GTX (shell donor ready to rock, still planning, rocco #7)
87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0 rattles, original clutch, driveshafts, wheels :)

----- Original Message -----
From: "Larry" <rocco16v@netzero.com>
To: "Josh Hignight" <Josh.Hignight@phoenix.edu>; "'scirocco'" <scirocco-l@scirocco.org>
Sent: Tuesday, January 29, 2002 7:56 PM
Subject: Re: Is my fuel enrichment working?


> Josh-
>   My 1.8 16V acts the same way (except it starts in an exemplary manner) in
> that reving past 6000rpm is counterproductive.  My FE tests good. So I
> believe this may just be how the stock 16V 'roc runs.
>  You are right; 3000-5000rpm is right in the meatiest part of the torque
> curve,
> Enjoy the ride.
>
> Larry  sandiego16V
>
> My car is a 1.8 16v. It seems to just make noise after
> > about 5800-6000rpm, but not really make any power. Is this typical of the
> > 1.8 16v, or is something wrong here? I'm thinking the stock fuel
> enrichment
> > circuit may be faulty. How can I check this? Would that have anything do
> to
> > with my hard cold starting as well?
> >
> > The car seems to pull really well down low though. I'm really surprised at
> > the amount of torque the 1.8 16v seems to make at 3K. It's the most fun to
> > drive between 3500 and 5500 rpm...  Maybe my cam timing is off?
> >
> > Joshua Hignight
> > Student Services/Technical Services
> > New Mexico Campus
> > (505) 821-4800
> >
> >
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> >
>
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