Dan R

What is this dawes thing all about. please someone explain to me

scoobiestu

basically it is a manual boost controller (makes wastegate solenoid obsolite) i fitted mine today a gbe evo 2 £43 best money i ever spent 0.75bar to 1.0 bar

Dan R

a few questions.
is it easy to fit
will my car run ok with higher boost
how do i know how high the boost is
also who do i call to find out more about it
will it not blow the engine up with more boost though

scoobiestu

**** easy to fit if you need give me a pm before you get it and i'll take a few snaps for you

you need a boost gauge to check what psi you are running at

a knocklink and AFR are highly reccomended (to prevent bangs)

boost is a lot smoother and more agressive

scoobiestu

http://www.gb-ent.com is where i brought mine from and gives a detailed explination of what it is etc

your car will have a fuel cut off at a certain psi so you cant accidentally go to mad on boost (like a safety limit)!

mine feels like it is putting out about an extra 30-40bhp since fitting this!

Dan R

your a star. cheers for your help. it may sound dumb but where is this boost thing on the engine and do i have to remove it.

scoobiestu

no probs mate

what model year have you got and what model?

Dan R

it is a 2000 turbo on a 2000 w reg. i thought that if you upped the boost the ecu will cut the fuel

scoobiestu

i think the fuel cut is 15.5psi on yours (may be wrong!)

if you get the dawes device this allows you to alter the boost to say 14.5-15psi so you dont hit the fuel cut but are running highish boost + it eliminates fuel spikes too! as in my car was spiking to 1.0 bar and dropping to 0.75 bar before fitting my dawes if i were to just up the boost it would spike say 0.3 higher than i wanted it to for a second and most likely hit the fuel cut! now with the dawes it spikes to 1.0bar and selttles to 1.0bar! meaning i can run optium boost
i'll find you a link to a fitting guide in a sec!

scoobiestu

http://stefanostadal.homedns.org/car_mods_engine.htm

there you go scroll to the bottom step by step guide

Scott.T

iTrader: (2)

get one from the MR2 forum for £17
at least this one is machined, rather then air line couplings screwed together.

scunnered

iTrader: (1)

You can also buy them (not with the Dawes name of course) from most aquarium suppliers for around a fiver.

Bricksh

Fast Fish

The_Judge

Standard boost pressure on your MY is ~11psi. The fuel-cut on your MY is ~17.3psi, sustained for a few seconds. If you have the standard turbo (TD04), you can raise the boost to ~15psi (running Optimax preferably, but Super Unleaded absolute minumum). With the aid of a fuel cut defender, you can raise the boost to 17psi. However, you're really on the safety borderline there without the need for a good octane booster. Also the TD04 is close to surging at low rpms, and running out of breath at high rpms at that pressure. So, probably best (and easiest) to stick to no more than 15psi.

Whatever pressure you decide to set, consider the following:-

- a Knocklink is an absolute must. And preferably fit it prior to the MBC, so you can compare pre and post mod activity.

- a boost gauge will obviously help you to set the boost pressure safely.

- an AFR gauge is useful but not essential, and could help you diagnose a faulty lambda sensor/MAF sensor...

easyrider

They are just a basic bleed valve-the dawes is a spring loaded valve that lets the boost build up quicker by not opening up untill the set pressure is reached,giving you a good surge of power,which no other type of bleed valve does.