I have been thinking about fitting my blitz boost controller (SBC Id3) but have a Unichip fitted with a boost controller or "turbo module" as per wiring sheet.

My question is does anyone know what the boost box does and if this is whats controlling the boost (currently set to 1/1.1 Bar)??
Is it a case of altering just the boost box to run a higher boost or does the unichip also need something changed?

I am thinking that I may aswell get a remap due to various mods since the last map and not bother with the Blitz unit.

I have read some comments in the Unichip group buy and havent seen this boost controller mentioned as yet. From the connections it is connected to the cars pierburg valve, ign, earth, 2 wires to Unichip, and to pin 30 on the ECU Airflow / and atmo pressure sensor.

Is this reading the feedback from the pierburg so the Unichip knows what boost the engine is running and changes settings to suit. Or is this controlling the pierburg?

And should I not bother with the blitz unit or remove this boost module and use blitz instead??? <img src="/forum/images/graemlins/crazy.gif" alt="" />

Cheers
Si

Im not sure but i would think so. Depending on any mods done since getting the chip fitted it might be worth fitting a blitx and then getting the unichip mapped upto say 1.4bar just in case for overboost and the like and have a good map for your car and can always sell the turbo module off on ebay for some cash to put iunto getting some cams for the Clio instead <img src="/forum/images/graemlins/wink.gif" alt="" /> 4 cams aint cheap but worth the money ive heard on the mk1's <img src="/forum/images/graemlins/wink.gif" alt="" />

Whatever boost you run make sure it is mapped on your Unichip regardless of which controller you use.

The Unichip boost controller does indeed control the pieberg/EBV. That valve does not give feedback, the way it works on a standard car is the ECU gives the valve a signal as to what boost it should run. AFAIK the boost controller does see the ECU signal, so removing it would remove a safety feature of the ECU, but I think you would need to talk to whoever fitted your controller to confirm that.

John

I have got a number for a Mark Harrison of Owen developments. I will give him a phone to discuss - From conversations in the past he really knows his stuff!!

My Car does overboost to 1.4 and holds usually 1.1Bar so I guess the mapping will be safe to cover the overboost. I think I am just going to leave as is and get a remap and run the fitted boost controller.
The Ecu signals go into the Unichip from the Unichip to the Boost controller and onto the engine bay, so aswell as fitting a new boost controller the old wiring would have to be removed for probably very little gain.

Using the car daily now so want it safe rather than mad <img src="/forum/images/graemlins/smile.gif" alt="" />

Will maybe look at cams for the clio however really want to keep it as standard as possible - There is however always a few V6 engines for sale <img src="/forum/images/graemlins/wink.gif" alt="" />

Si

If your car was originally mapped by Mark @ Owen Developments then I'd strongly suggest you ask him to remap it rather than going elsewhere. They don't do any new Unichip work, but I believe they will remap existing customers' cars, and IMHO he is one of the best mappers out there

Only a couple of wires from the ECU actually go into the unichip, and you wouldn't have to remove the wiring, you can just disconnect the EBV to bypass the boost control module. The Unichip will use the original boost control wires in the loom

Ive never seen a unichip boost controller so i dont know how it works but the advantage of having a setup with a boost controller is you cna set a daily boost level, say 1bar or less if you wish and then a scramble style setting for when you want more power for the quick blasts, most controllers have some function like this and allows you to maintain a nice car thats a bit better on fuel for daily driving and a wild beast when needed <img src="/forum/images/graemlins/laugh.gif" alt="" /> It really depends on what you want and what O-D can provide but they get a good rep on here and seem to do a lot of coop business so know what they would be on about <img src="/forum/images/graemlins/smile.gif" alt="" />

Si, i guess you could have one really wild engine and buy in a spare to stick in it when you want to sell on as standard and then sell the wildcat engine for some more money i guess lol <img src="/forum/images/graemlins/laugh.gif" alt="" /> hasnt someone tried a twin turbo and super charger stuff on them now?? heard of one using NOS that went bye bye due to too much <img src="/forum/images/graemlins/laugh.gif" alt="" />

It's a very long trek to Owen for me (Live in Aberdeen) However Dasteks Head office is not far down the road but there always seems to be mixed reports about them!

I was a little worried last time when I spoke to Mark and he said they no longer installed Dastek.

So I could remove the boost module, fit the blitz and get it mapped for 1.3/1.4 bar but run as is at 1/1.1 for the daily commute and raise this when "conditions" allow. Sounds good.

Kingpleb - Theres a few wild versions out there I think a few supercharged ones (There was a kit for sale not to long ago 2nd hand!) and Turbo ones overseas. I have been speaking to Mark Fish (Mark Fish Motorsport - Renualt guys) Lots of ideas but the pennys soon add up!! The Boot even has a custom made space and rear shelf for HUGE Nos bottles - think that have been the guys downfall <img src="/forum/images/graemlins/laugh.gif" alt="" />

Thanks

LOL i heard there was 2 turbo varients around, one with T25's or such like and one with a smaller turbo and a larger T3 sized one for ubber topend power but can imagine the pipe run now for them both <img src="/forum/images/graemlins/shocked.gif" alt="" />

What you have said above is what i would agree with but never letting it go above the max boost level it already has untill its remapped, and maybe throw a mod or two in with it...

Do you have the AA or RAC at all at a good level of cover as there is a cheaper ay to get down there bar 2tanks of fuel there and then same back in the coop..... <img src="/forum/images/graemlins/wink.gif" alt="" />

Yes, but actually you don't even need to bother removing the Unichip boost controller if you wish to fit the Blitz, you can just disconnect the wire to the EBV. I did this on mine when I used to run a unichip

KP- the Unichip boost controller doesn't offer you multiple boost maps, it is designed to control the boost via the standard mechanism better than std - you can think of it as a tool to up the std boost by intercepting the standard signal and adding a relative map - in much the same way as the rest of the Unichip works.

In any case I would get your Unichip remapped on top of a Gtech2 chip rather than on top of the stock ECU as it will give the mapper more freedom to play around with fuelling and ignition advance.

Just for comedy value there is this tit bit as well from theaa.com
Distance 506.9 miles
Time 9 hr 50 min

LOL - Like your idea with regards to the AA and RAC <img src="/forum/images/graemlins/laugh.gif" alt="" />

Had a look and the signal from ECU (pin 23) to Pierburg at present is held to Ign (pin 27) with a 2k resistor. So the wire to the pierburg is now going through the boost control module and onto the unichip via two wires. Am I right in thinking that the resistior is purely to keep the ECU happy and not allow the injector light to come on? If so then I am happy with fitting the blitz unit.

If I fit the Blitz unit and run it at 1/1.1bar (same as what the boost controller was set) then I should have no problems until I get the remap.

Would be good to map on the Gtech2 Chip - Will contact Graham.

Has anyone used Dastek? or Mapped a unichip ontop of the Gtech2??

Cheers

I guess the resistor there is to change the impedance to suit the boost controller. I disconnected mine from the valve only and had no problem so should be fine.

I had my coupe mapped on top of a Digitec chip which is v similar to a Novitec chip. I reached the limit of adjustability on the OE chip which is why I fitted a different chip.

yes ,it should be straightforward to just disconnect the boost module and then fit your Blitz.

Joe <img src="/forum/images/graemlins/smile.gif" alt="" />

By the sounds of it though your boost module doesnt need to be unwired at all... Just unplug the boost inlet and outlet pipes from the EBV, plug them with a short strip of pipe and then wire in the blitz dual solenoid and controller around.

I may be wrong but i dont think you would see any advantage using a Gtec2 if you are getting it fully mapped again as the full mapping will be done to suit your car down to a 'T' for the mods you have then...

Just my opinion like and i may be wrong but thats the way i see it as it will keep the Unichip happy and the ecu and just wire around <img src="/forum/images/graemlins/smile.gif" alt="" />

Does this mean that you can fool the ECU into beliving the EBV is still there? Is a resistor enough on it's own or will something more be required?

Thanks Guys, I will fit it this weekend (Hopefully use most of your guide Joe <img src="/forum/images/graemlins/wink.gif" alt="" /> )

Not sure about the resistor as it goes to Ign 12v so is providing a set point to the ECU. So unless this 2k value is enough to fool the ECU I cant see there being a point in having it there unless it's for end of line purposes. Those that have removed there pierburg and left the wiring does the injector light ever come on?? If I recall on my punto GT (Similar valve) It did come on but only under hard acceleration. If the wiring was removed then the open circuit should cause a fault (I think).

Graham basically said the same as you Kingpleb. The Unichip does the ignition advance and it would give a better starting map for my car. However as the unichip is installed and set up then it's probably best to leave things the way they are and just work from the existing map.
Just need to think about the mods I want before getting it remapped <img src="/forum/images/graemlins/laugh.gif" alt="" />

Thanks
Si