16v warm up reg? is it this one?

been offerd this warm up reg is this one the one you upgrade to? says its of a 1990 car

I don't suppose you have a photo of the back?

yup, that pipe coming of it, is that for the vacuum hose also on the first pic what is the black part next to the connecter?

Yep, that one will do the job.

nice one mate

This should be used with the larger throttle body. Also I recommend that you use a pressure gauge to measure the cold and warm control pressures and ensure that the pressure change is smooth and even. You don't want to run too rich from cold and too lean when warm. You can adjust both pressures using the hidden Allen head screw under the brass cover. The front black piece is a cover and is used in applications that need a control pressure change due to altitude

i have the audi throttle body, the engines got a 2ltr bottom end with a re1900 gti engineering head cam etc i dont really want to fiddle with settings id rather just plug it in and let it work its own magic like.

sim0n_parker said

i have the audi throttle body, the engines got a 2ltr bottom end with a re1900 gti engineering head cam etc i dont really want to fiddle with settings id rather just plug it in and let it work its own magic like.

It doesn't "work any magic", it needs properly setting up to give any power gains. All it does, is allows you more control over the AFR, you need to set it up properly otherwise it will be the same or worse!

Paul_c, I'm considering using one of these newer model warm up valves on a Mk1 dx gti.

Can you offer any enlightenment on how to measure the pressures and on what… so it will "do its magic"..

I've read a few articles lately about the latent 30 - 50% power potential in K-Jet, but none of the features are that forthcoming in how to liberate it..

I understand knife edging and polishing the larger audi throttle body - that bits obvious - more in = more out..

But the other area covered by many articles is the hint that the idle fine tune adjustment (3mm allen key on the metering head) controls the low speed idle mixture - they all hinted that tuning this was the key to big increases higher up the rev range..

Any light you can shed on this?

cheers

KDXdestroyer said

Paul_c, I'm considering using one of these newer model warm up valves on a Mk1 dx gti.

Can you offer any enlightenment on how to measure the pressures and on what… so it will "do its magic"..

I've read a few articles lately about the latent 30 - 50% power potential in K-Jet, but none of the features are that forthcoming in how to liberate it..

I understand knife edging and polishing the larger audi throttle body - that bits obvious - more in = more out..

But the other area covered by many articles is the hint that the idle fine tune adjustment (3mm allen key on the metering head) controls the low speed idle mixture - they all hinted that tuning this was the key to big increases higher up the rev range..

Any light you can shed on this?

cheers

See http://www.vwgolfmk1.o…c&highlight=afr&start=140, page 15 onwards shows the actual WUR mod, but the rest of the thread shows a lot of other fuelling tweaks and the actual effect on the car's performance. In summary:

Before: 1/4 mile in 14.40 secs, 0-60 approx 5.6 secs
After: 1/4 mile in 14.15 secs, 0-60 approx 5.3 secs

But to set it up properly, you'll need:

Fuel pressure gauge
All the other tools to remove & fit fuel injection components
AFR meter and quiet roads or rolling road
Quite a lot of time, for trial & error

Paul,

thanks a lot - lots of quiet roads around here.. !  the link shows lots of reference to AFR ratios - but no reference to BHP changes - any ideas what is possible with just these changes..?

scrappers here i come!

thanks

Obviously, power = torque  x speed

bit technical for this time of night!  I've had to put down my pint of guiness to think that one through..

So, Where M is at peak is the desired target i assume, Lamba value .9, so a 16% on the left hand scale? What is the left hand scale? AFR?

The left hand scale is the % of gases according to the lines for NOx, CO and HC (ie the ones considered pollutants). Obviously there's CO2 and H2O coming out of the exhaust pipe too. Don't read off 16% though - torque M is read off the scale on the right, not left, so on the sample engine its 70Nm.

where do u tap into the vacuum pipe?

cheers paul_c..  lots to think about in that graph..