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General My Abarth Project - Bits and Bobs

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General My Abarth Project - Bits and Bobs

Greggers

Greggers

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Hi guys,

I've noticed that there are 4 different versions of the ECU for the Abarth. My question is, can you fit any of the 4 different versions and why are there 4 versions in the first place?

Fiat Stilo 2.4 Selespeed 7C 86 29 01 01
Fiat Stilo 2.4 Selespeed ACC 7C 86 2A 01 02
Fiat Stilo 2.4 Selespeed 7C 86 38 02 91
Fiat Stilo 2.4 Selespeed ACC 7C 86 B9 02 92

I've got the earliest version and apparently it's very difficult to remap, so if I could fit one of the latter, maybe it would be easier? :confused:

Cheers for any insight! (y)
 
The codes you've listed at the top are ISO codes which identifies the car as a whole, not the hardware version of the ECU.

My Abarths ECU is HW: 0261206655 SW: 1037363857

another version I know of is HW: 0261206655 SW: 1277356595

It can be picked up in some diagnostic software, flash tools or its on the white sticker on the ECU (see attached pic).

The software versions differ depending on where the car is to be sold, or where there would be changes made of local laws or maybe even the altitude of the country of sale.

You could fit another ECU from another car but you would need either a new one or one that has been 'virginized'. I think the ECU eeprom is loaded with certain code which allows it to code itself to a new car.

There are companies out there that will virginize an ECU for you at a cost but no one ever shares information on how to do it publically.
 

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Hi Dan,

Thanks for this, I appreciate it. I've attached a grab of my ECU. My car being an '02 seems to have a different ECU to your '03... I wonder why it was changed and if it accounts for the difficulty that Red-Dot had remapping it (ignition advance only)? After reading Stiloabarthdriver's mods on the other forum, what I'd like to try is:

1) Fit GTA injectors
2) Fit GTA MAF
3) Fit GTA throttle body or a.n.other larger diameter throttle body that fits
4) Remap existing ECU to allow injection of more fuel as well as ignition advance

I'm really not sure how to proceed with this as I've got no idea how it'll turn out. I've contacted Stiloabarthdriver but not heard anything back yet... his input would be invaluable. I'm thinking to contact Autodelta and see what they think and if they'd be interested but the whole idea was for this to be a relatively cheap upgrade using second hand parts and a remap...

I guess the first step is to contact Autolusso and get a cost for the injectors, MAF and TB! (y)
 

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I've just had a quote for second hand parts from AutoLusso...

2nd Hand GTA injectors - £10 each
2nd Hand GTA MAF - £50
2nd Hand GTA TB - £80

Not too bad but i need more details about this from an expert or someone who's done it before to see what's going to be involved before I drop £200 in parts + a possible new ECU + a remap...

The thing is, I'm not even sure if new injectors are needed, the standard ones might be able to flow enough fuel so maybe just a GTA MAF and TB would be enough with a remap? Do I need to change the inlet CAM for this to even be effective?

I'm a bit out of my depth here so any advice from people who are moreexperienced would be gratefuly recieved! (y)
 
I hope you are going to be taking pics of this. I would say can you double up the parts to see if you can get them cheaper and share the cost but you have seen my other thread and money is tight right now.

I spose it couldnt harm to change the injectors, how many are there and how difficult do you reckon it would be.

I believe that a good remapping garage will be able to hook you up with a new ECU. They get them for pennies. Red Dot were a bit wary of remapping my 1.6 so asked me to come back when they would have a spare ECU waiting. Phone up red dot and see what they say.
 
Yep, I will do! As you say, I don't think it can do any harm to change the injecotrs for the GTA ones. Despite only needing 5, I'll order 6 so that if they don't work out for any reason, I can sell them as a set for a GTA on FleaBay (y)

What I need to do first is have a look at the injector duty cycle on my car and see how loaded the standard injectors are. If they're never getting up to 80% then it's pointless to swap the injectors.
 
Well, I was planning to fit my 147 anti roll bar tomorrow. I drilled out the mounts to change the bushes for nice new polyurethane ones only to find that the ARB is 24mm and my bushes are 22mm... very annoying. Wish I'd checked that sooner but 24mm ones are now ordered from PRI Racing (y)

What is weird is that my ARB is 24mm but the GTA one is only 23mm... :confused:which makes me think, what version is my ARB off of? It's the thickest ARB that was fitted to the 147!!!

Really looking forward to fitting this now and seeing what difference it makes as I think my ARB bushes are knackered after 50k...

On seperate note, I'm getting really pissed off with the quality of driving in London now... I was almost sideswiped today by a 2010 Focus at a roundabout. I was in the left hand lane taking the second exit and the **** was in the right hand lane but somehow thought he could take the first exit... almost through me! Thankfully my Stebel Naultilus put him right but I tell you, it was f*cking close! I still haven't even got the damage from being hit by a bus repaired yet, this would have made me blow a fuse! :mad:
 
Wow im very interested in how the anti roll bars work out. The Schumi gets a bit of torque steer (if that is the correct word) and it would be great to put that to a stop. This may also be a very useful mod for the smaller engines which suffer severely with understeer partly (ok mainly) due to not having anti roll bars.
 
My Abarth Project - Bits and Pieces

Right, finally got around to adding an inlet pipe to my CDA rather than it taking hot air from the bottom of the engine bay. I've run an 89mm neoprene hose with a trumpet to the area infront of the n/s wheel arch by putting a hole in the plastic surround. Basically, it takes air from the same area as where the horn is located on the o/s. Be interesting to see if it makes any difference.

I've ordered my GTA injectors and they should be arriving soon, so hopefully I'll be able to fit them later this week. £65 for six delivered. I figured get six so that if they don't work out I can put them on eBay for other GTA owners to buy (y)

I've also ordered replacement bushes for my 24mm 147 anti roll bar and thrown the 22mm ones I ordered by mistake. It's quite comical when you compare the 24m ARB against the standard Abarth one which is 18mm I think - the difference in thickness is massive! The ARB's aren't exactly the same and I can see possible issues with mounting it but the lengths are the same. The difference is the lip that stops the ARB moving side to side when mounted - The 147 looks like it might be narrower and also, you can't use the 147 mounting brackets as the holes don't line up with the subframe. Maybe I can drill new holes in the subframe to allow the 147 ARB to fit - either that or adapt the 147 ARB to fit. I don't know yet. I wish I had an Abarth ARB to compare it against :mad:

I'm also seriously considering getting the Q2 diff installed. It's £600 inc VAT fitted by AutoLusso and I expect AutoDelta will do it for the same... plus they're closer. It should really help when the roads are a bit slippy or you're flooring it in second out of a roundabout... Bye bye understeer!

I'll keep you all posted here as to how I get on with it all.
 
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Could someone do me a favour and access EPER to compare the part numbers of ARB's on the Stilo? I'm basically trying to find out which other models use the same ARB as the Abarth as there's a 1.6 and a 1.2 ARB on eBay (y)
 
Up to 2003, ePER shows the same ARB for all models except the "4 seater van" and "reinforced suspension camping car".

After 2003 it's a minefield with different ARBs depending on model, engine size and VIN. There's also mention of some models with 17mm and some with 18mm diameter ARBs.
 
Davren said:
Up to 2003, ePER shows the same ARB for all models except the "4 seater van" and "reinforced suspension camping car".

After 2003 it's a minefield with different ARBs depending on model, engine size and VIN. There's also mention of some models with 17mm and some with 18mm diameter ARBs.
Click to expand...

Ah that expalins alot... The whole range, whether it was the 1.2 or the 2.4, used the same ARB until the MS GP and the JTD 150 came along when they went to an ARB a whole 1mm thicker... What generous souls :D

I think I'll order a second hand Stilo ARB so I can compare the 147 ARB and the Stilo one against each other and carry out any work before I drop the subframe.

I wonder if the 23mm GTA ARB and my 24mm ARB have the same positioning for the mountings? I might contact Shop4Parts and see if they can inform me.
 
PNL said:
Why oh why do you keep faffin around with stuff and hoping it will fit when there is stuff already out there developed for the 2.4..:)

I put this link else where but you obviously missed it..

http://www.ultraracing.com.my/Catalog.asp?Brand=Fiat&Model=Stilo MS 2.4&pageno=1

They have a british agent as well so you dont have to import ya self just get on the bloomin phone..:D
Click to expand...

Phil I think Greggers is after Anti Roll Bars not braces...
 
Well Phil, they don't do an ARB only chassis braces hence me not looking at them... :D

Seriously though, I have been loking at them as I'm interested in seeing of the strut brace would fit around the standard Selespeed reservoir. The OMP one gets right in the way :(
 
Greggers said:
Ah that expalins alot... The whole range, whether it was the 1.2 or the 2.4, used the same ARB until the MS GP and the JTD 150 came along when they went to an ARB a whole 1mm thicker... What generous souls
Click to expand...

The 18mm ARB is only specified for some post 2003 models. There's a note about the change that says "New front and rear suspension setting to improve quality (of ?) tracking"

According to my schoolboy mathematics, the difference in cross sectional area of the 17mm and 18mm ARBs is 12.11%, quite an increase.
 
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