fiestaturbo.com

[philip_d]

Hi Guy's,

Any you guys got a Unichip-Q on your Fiesta's with a EEC-IV ecu?

I'm in the process doing a 1.8 ZT for my Fiesta Si Track Car(Currently a 1.6), I've currently got a full RS1800 setup for the build (Inlet, Sandwich plate, TB, 2 litre cams & CULT Ecu) as I was going to just do a RS1800 setup. When I decide to go Turbo I was looking to go megasquirt ecu, with a plug and play EEC-IV adaptor for the Turbo Coversion and sale the Cult Ecu. My cusion suggested using the RS1800 ecu and fit a Unichip-Q for the turbo conversion (he works for Millway Vehicle Specialist in Andover).

He can get me a Unichip for about £100, and then he can get it setup and mapped for me at about £100 or so. Where as the Megasquirt going to be £300+ before setting up and mapping. My Cusion said the unichip will be better as cold start will be controlled by the standard RS1800 ecu, which he said is a pain to setup on a standalone ecu's. If I was to get a Megasquirt or something I would take to him to set it up on the rollers anyway.

The Engine I'm going to have;

- 2mm stainless decomp plate,
- 2x Head Gasgets
- ARP Rod Bolts
- ARP Head Bolts
- High Inpendance Side Feed 440cc Injectors (From a Subaru Impreza)

What you guys think? will the Unichip do what I need? or would it be better to pay more and go Megasquirt or other Standalone ecu?

[Rhinopower]

You can get megasquirt for less than that from James Murray engineering. There are plenty of maps available to get you going and support on the msextra forums. It's a lot more versatile and better for your needs, at the end of the day the rs1800 ecu doesn't measure map, so how on earth is it supposed to know if the engine is making boost? Power engineering will also be happy to map it on the rollers.

[sailorbob]

.... at the end of the day the rs1800 ecu doesn't measure map, so how on earth is it supposed to know if the engine is making boost? .......

Who cares as long as you know how much air is flowing into the engine

[Rhinopower]

Name a production car thats forced induction, and uses a maf with no map sensor?

[sailorbob]

The map sensor gets used for boost control not fuelling, e.g. small turbo Escort Cosworth.

[philip_d]

You can get megasquirt for less than that from James Murray engineering. There are plenty of maps available to get you going and support on the msextra forums. It's a lot more versatile and better for your needs, at the end of the day the rs1800 ecu doesn't measure map, so how on earth is it supposed to know if the engine is making boost? Power engineering will also be happy to map it on the rollers.

Sorry, Not check this thread in a while.

Cheers for the responce, I will give James Murray Engineering a ring and see what he can offer.

If I was to get a UniChip Q, My cusion said I would have to get the "Plus" version as has extra bits to support turbo cars (normal uni Q has two sockets, Uni Q plus has 3 sockets). he advised me that the extra socket on it is to control MAP sensor, and also other things like two stage map and etc.

[andymac]

I would still consider megasquirt over unichip; a piggyback solution has more points of failure in my mind.

Both MAF and MAP sensors can be used to calculate air density and thus to calculate fuelling requirements; though MAP sensors are more commonly used in positive pressure (forced induction) systems. That doesn't prohibit the use of a MAF sensor on a forced induction application, however.

[philip_d]

Cheers for the info Andy, as advised by you and other I think I'm going to look into Megasquirt now. Its One way to learn about ECU's and mapping, but at a lower cost to Destek Unichip and other Standalone ECU's.

Already got myself an old broken Ford EEC IV ecu, which I've removed the board from ready for the Megasquirt adaptor board as I looked into Megasquirt before. I wanted to keep most of standard Si engine loom, hence my cusion adviseing me about the unichip. With the EEV IV adaptor board I can setup up the car with megasquirt first on the 1.8 N/A engine, then once I've got all the ZT parts I need I can fit them and then remap it for the ZT conversion.

My ZT coversion plan now is as follows(but knowing me it could change );

- Megasquirt 2 with Wastespark, 3 bar Map Sensor, EEC IV Adaptor Board. (need to buy and build)
- 1.8 silvertop with Forged low comp pistons, Shot peeded rods, with ARP bolts & modd crank breather and sump returns. (Just need the rods Shot Peeded, buy the Pistons and ARP bolts)
- Standard HO inlet, 130 spec TB & etc with Side Feed Subaru Turbo/Nissan S14 injectors (just need the Injectors)
- T3 Turbo & Manifold from ERST, and zetec to cvh manifold adaptor plate (got all bits, but turbo needs a rebuild to oil only and get some oil feed and return pipes made)
- FRST crossover pipe and boost hoses (just need boost hoses)
- Roose Motorsport Hybrid Water hoses with adaptor for water temp sensor (need to get)
- FRST Ally Rad, Electric Fan, Alloy FMIC (Need to get all, got a standard FRST intercooler)
- Oil Cooler & filter relocation Kit, Oil Breather Kit for Crank pressure (Need to get All)
- Down pipe and Exhaust with 100cell easy removeable cat (Get custom made by Long Life)

Was going to go decomp plate with ARP rod bolts to keep costs down, but thought for track use it would be better to go for low comp Forged pistons & shot peeped rods. I would be happy if I can get a safe 200 to 220 bhp

[andymac]

I did a bit of reading a few nights ago about after-market management for turbo applications and, as I understand it, full sequential injection is the way to go but understand this necessitates a cam position sensor (dunno if the zetec has one tbh). However, that may also necessitate a change of injectors if the standard ones won't flow enough.

On my car, the ecu already does sequential injection and the injectors can (allegedly) flow enough for around 350hp - so I'm looking at MS3 as a viable option but have yet to discuss this properly with anyone experienced or knowledgeable on the subject.

[philip_d]

I know the Zetec has a cam sensor on the Inlet cam, but don't know if its good enough signal for full sequential injection on the megasquirt. Will have to find out with the geeks on the megasquirt forums?

I know to use cosworth managerment on a ZT build, you have to do some modds to the end of the Inlet Camshaft for the cosworth sensor to read it. As per the http://www.zetec-turbo.co.uk guide.