looking for boost controller for cossie.

Proper digital not just bleed valve.

Whats recommended and supplied by who?

Don't really want to change chip etc in management to go dowm pectal style root unless it can be done for decent price.

 

greddy b spec s are pukka you can get one from norris designs around £300 i think

 

apexi?

 

at the moment,, the ecu controls ignition, fuel, idle speed, and boost pressure!

why do you want it too loose control of something so critical as boost pressure

 

list is endless..apexi..hks..greddy..etc

 

list is narrow for me,,,,,, ecu control! cost is very cheap,

 

some people just want flashy things on their dash

 

buy a christmas tree then

 

good answer

 

I have spoken to Sunny and Rod Tarry about this and they recomend the Turbosmart E-Boost so that is the one i am going to get.
HTH

 

This might help:

https://passionford.com/forum/viewtopic.php?t=66819

 

greddy b spec s Got new one off E-bay works a treat
£240 delivered to my door in 3 days

 

Turbo-smart e boost. a lot of the other controllers, apexi, greddy etc struggle to maintain controllable boost around the 2 bar mark.

 

i still dont understand the need for another boost controller

 

I want it so i can easily turn boost down for road and slightly up for track events

 

how do you know the air fuel ratio is correct when turning the boost down?
just because its less doesnt mean its safe! could do more harm than good

slightly up for track days,, i wont even comment on that one

 

maybe it's down to the way these boost controllers seem to bring the boost in harder than a standard amal/lektron/bleed valve and will (should) hold a constant boost that doesn't vary with ambient temperature?

do they also give you the same boost in all gears? with a normal bleed valve arrangement you tend to get less boost in the first 3 gears.

 

but if the boost is coming in harder (because it maybe a bleed on system of control) then how do you know its been mapped for the extra (air) boost?

 

I am using a Greddy Profec B2. You can adjust the gain on it to bring the boost on earlier, have warning's and safe levels, low and high boost settings etc. Good bit of kit IMO.

If only I knew how to use it properly lol

 

cos you set it like that before it's mapped.

 

but if you fuck around with the boost after you have it mapped what was the point in getting it mapped in the 1st place!!!!


Listen to Gareth he is RIGHT

 

i would be checking it with my wb lambda gareth

personally, i am with you on this one. that is why i intend to go S8 with integrated boost control.

different strokes for different folks eh?

 

Not sure what other systems are like, but when we map an Omex system, its mapped at each load value. So, its doesn't matter where you set the controller (obviously up to the maximum that it has been mapped to).

These Jap controllers are very good bits of kit.

 

foreigneRS,


dont agree there though,, i think its more about different strokes for different folks who think its cool

 

Christian and Beccy,

do you think cossie aftermarket stage three chips are mapped to run 18 psi at 5000 rpm?

editied as i was ment to read 5000 not 500

 

GARETH T Your car is supposed to be mapped to run the highest boost possible for your set up. When you do this and add a boost controller you can turn the boost down to a lower level for around town. Your MAP sensor sends the ECU the boost pressure and the ecu sends the right amount of fuel. As long as your not an idiot and turn the boost above what your car was set up for then you have nothing to worry about. Just like the ECU the boost controller is only as smart as the user. I hope that helps.

 

 

ya great,, but only if the laod sites have been programmed! how many tuners map a car ment to run at 23psi, map for 20/19/18/17/16/15/10/8 psi aswell?

 

Do you drive your car at 23psi the whole time....... No you do not. So if it's mapped for 23 it will know what fuel to use at 20/19/18/17/16 and so on. The ecu reacts to voltage. But for explaination I'll use %. At 24psi your ecu receives 100% voltage and give the fuel for that voltage. At 12psi your ecu receives 50% voltage and gives fuel for that voltage. Do you see where I'm coming from?

 

thats where you are wrong a little bit,,, im trying to draw somethign to help show

 

I'm not jumping the gun on you but if my tuner set up my car and it was perfect at full throttle and running lean or rich at part throttle I would put my foot so far up his ass that he would need a shoe repairman to do his detal work. I spend 99.8% of my driving at part throttle.

 

who said anythign about part full throttle!

im trying to draw something and it aint working,, i wish i listened in art now

 

Cause at part throttle you don't make full boost. And you car would have to see that and fuel for it.

 

this post in along the same lines, and stu sort of backs up what im saying
https://passionford.com/forum/viewtopic.php?t=77710

im not saying there will be a problem,, but im also not saying there wont be a problem!

 

but your air fuel needs for hard acceleration and cruise are two different things

 

That would be where the TPS would come into play. If your driving you car at WOT with the boost turned down the ECU should be able to get the mixture right if not at least rich because it senses WOT

 

whitneyd,
it would hopefully be near,, but how do you know?? you cants just turn the boost down

 

really? not even going up a steep hill?

 

Depending at part throttle your at.

 

anyway, that's the shit thing with a MAP based system. these boost controllers are designed to work with Jap cars that mostly use air mass flow sensors so they know how much air is going in regardless what the boost or throttle is doing.

i don't know why someone can't use a hot wire air mass sensor and develop a kit to install on cossies and junk the marelli shit. in fact i don't know why SECS didn't design this into his S8 ecu.