NEIL A

iTrader: (6)

I curently have one of Stu's single air injectors that worked well on my old engine , but i dont like the idea of the injectors bleed on and fail closed.
What boost controllers work well on cosworths, can any have two preset boost levels.

Turbosystems

iTrader: (5)

you have it mapped correctly,however i can map the air injector to bleed off if you so wish

Daxcossie

Neil,

Im running a Greddy Profec B Spec 2 Controller, which is one of the more basic controllers.

You can save a low & high boost setting and make a number of adjustments. Also has high boost warning and saved peak boost.

http://www.thor-racing.co.uk/GReddy_..._-GDY__PF2.asp

NEIL A

iTrader: (6)

Tony i was wondering that, if you could 'T' in and use the air injector as a bleed off . Would this give as good control, atleast that way if it failed it should just run the max boost set on the actuator.
Car is in for mapping just now, map and cam timing have been done on low boost so now time to do the boost side of things.

Turbosystems

iTrader: (5)

you can also have 3-12 position boost control
the theory behind bleed on is very valid however when you drive the two types you can't tell ,I have mapped them this way before for other concerned customers who have had air injector failure and consequential damage.
What turbo are you using jap boost controllers don't control big turbo's and big boost very well ,unlike the pectel air to air system and it's copies

Moonstone Steve.

iTrader: (2)

Out of interest are the air injectors Boschman sells any better (reliable) than the norm fuel injectors found in air injectors.

Steve

Turbosystems

iTrader: (5)

no

NEIL A

iTrader: (6)

Tony im running a roller bearing T4 , but im not running P8 anymore im using one of the Colins ecu's.

Turbosystems

iTrader: (5)

injector long livity is imo affected by the boost control pressure pick up point best after the intercooler not from the turbo,temps leaving the turbo compressor can exceed 200 degrees C
If you have the mapping software no reason why I can't map it to bleed off
there is nothing wrong with a p8 it is a serious ecu

Moonstone Steve.

iTrader: (2)

Care to elaberate some more Tony, Phil told me that the injectors used are unreliable due to only being able to run fuel for long periods whereas the new ones are purely an air injector and are far superior.

Steve

Ps where are you based.

Turbosystems

iTrader: (5)

stoke on trent
charge air temp is the issue with injector failure

rapidcossie

Is an air injector with the boost control pot something that can be fitted "stand alone" from the rest of the ECU/wiring?

I have always wanted a good high boost/low boost switch on my car.

col cos1

iTrader: (5)

i said that to john muir at mv turbo`s years ago when getting my old saph set up and he said.................................

cant you control your right foot

rapidcossie

Thats the reply I get at AVA aswell but I would like a lower boost seting for day to day use.

NEIL A

iTrader: (6)

Euan dont you run a boost controller through your ecu, cant Autronic have 2 stage boost ?

Turbocabbie

do you still map P8 Tony ?

pa_sjo

What's wrong with a boost cut?

CossieRich

iTrader: (1)

Euan,

you can have a dash mounted dial for low/high boost. Im sure when i went out in Rods last time, Mark said he was switiching to high boost

Turbosystems

iTrader: (5)

yes i do
p8 is the dogs

CossieRich

iTrader: (1)

Tony,

What is the known problem with the P8 and it going into limp home mode. Im sure Stu was saying about it on here a while back. Why does it do it and how can it be sorted?