Have to agree with your last comment Si . I've been reading this thread with interest, and my recent visit to Perfect Touch has only served to enhance my feelings.

My car was detting above 5500rpm, and the Unichip has enabled this to be removed (can only be a good thing!). Rob at PT has then optimised the ignition advance and fuelling for both low and high boost maps on my EBC, and I can actually feel the difference that this has made on the road. The car is now much more responsive, as it is no longer having to struggle with the old settings that were effectively fighting against each other.

Ross - I know that you are keen to pursue the route of finding the right plug and play chip for your car, but surely all the RR time spent trying the various permutations is going to add up? If you make the car mappable by fitting a Unichip, you can get this done in one session and know that it is spot on for your particular modifications. Surely you don't want to risk all the time and money that you have invested in your Coupe this year .

Phil

I understand what you are saying, but the money isnt that much.

I bought the Gtech2 originally for from graham as most did.

This rolling road session was to check running and setup boost controller.

So far i have bought a revised chip (not yet paid for) and am going to a club rolling road event to check this costing £26. Now, im practically out the price of a chip so far. So im not wasting money to be honest. My results this sunday will decide what action i must take.

I dont believe there is much risk involved because im going to monitor the fuelling change with the rolling road. I will not lean it out too much.

Ross

It's your choice Ross, but are you sure that they will be checking the fuelling for £26? Sounds like they might just be doing power runs for that, although you'd like to think that they will be monitoring fuelling and detonation .

I was keen on the plug and play route for a while, but the compromises that have to be made lead me down the Unichip route when I starting getting too far away from a standard set up (well, that and Rog's Group Buy !)

Phil

Hahah.

They are defintaley checking the fuelling. There is 32 cars getting done, so they are raking the money in. Its the same company that done my boost controller setup.

Ross

I'd be careful Ross, if they are doing 32 cars in one sitting then they aren't going to be too careful about monitoring the fueling and for det. They will be more interested in getting cars in and out quickly.

I know you like to save money and do things as cheap as possible but like everyone else who is trying (in vain) to give you some advice on this, I really would spend that extra £400 on a propper set up and map.
A plug in chip can never be anywhere near as accurate or correctly mapped for your car as a unichip or a live mapped ECU.

Have you thought about live mapping ? Slightly cheaper than the unichip but just as accurate, maybe even more accurate as its the ECU still doing the controlling.

As i said i will be looking at options after sunday.

They will be checking the fuelling because i will be watchinh their AFR myself if neccesary.

Ross

It is if you're wanting pub figures.

Quote:

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and I can actually feel the difference that this has made on the road

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This is what Perfect Touch are all about - they don't seem overly bothered with "caressing" an owner's ego with headline flywheel figures. They simply map the car to drive well on the road. They managed in an hour to sort what PTS couldn't in two seperate three hour visits. The subsequent problems I've had are down to my car, not Perfect Touch's mapping.

Detonation kills engines. If you can hear it, you literally have seconds left before something breaks or melts. Just because you can't hear it doesn't mean its not detting. The fact that at least two well known cars with considerable mods have been found to be detting is worrying to say the least.

My honest recommendation is that a Unichip is what you need to have any confidence in your engine's longevity

They have det cans to check if its detting.

I have other problems tho.... lost a clip from the gear lingaes and now i cant get 1st 2nd or 5th. Need to see if Fiat have any in stock or get it delivered for friday. Also, need to get the bearing that the power steering pump sits in replaced aswell. Anyone know the prices and availability of these?

Ross

Carl has to be your best bet Ross.

Really want new bearing tho, as carl is unhappy with providing 2nd hand one.

Ross

Good point. Well your local dealership should be able to get it next day delivery.

Yeh if they still make the part!!!! Hahaha. I'll find out tommorow.

Ross

Got the gear linkage clip from a punto (same part number) but the guy couldnt get access from above so now im going to have to wait till he puts it on the ramps (some time tonight) .

The bearing that i need is £40 from fiat. Total ripoff. Need to reconsider "when" i can afford it.
Said there is still a slight noise (didnt specify but i think it will be the pads vibrating, as it squeeks badly.

Ross

But surely if your bearing fails this could lead to a nasty end for your engine no?

possibly as it would take the aux belt and then take out the cambelt. i was lucky when my ac compressor ate itself up and spat the belt out adn the cambelt was fine...

Oh yeah. Never really thought of that actually.

Ross

Phoned rog and he said the bearing is a split bearing which means it can be pulled apart and cleaned out and re-greased, so as to stop the noise.

As for the rolling road session the plot thickens.

The graph was right. I was running 23.3 psi mid range, as the guy said it was safe to do so. So there ya go.

Also he said there was definately no detontation and that my co2 emmisons were 10% above.

I asked him how this related to AFR, and managed to get the figure of between 10-10.5 throughout the rev range. So im running mega rich.

So GrahamL has made me a chip with "significantly" less fueling to address the problem, but still reckons it will run rich (which i kinda want anyways)

I'll find out tommorow exactly how this other chip compares and also get the boost settings checked again to make sure its running sweet as a nut.

Ross

1.6 bar? I hope no one blames the chip when your engine goes bang!

Hahah. Well i'll get them to check it. Probably reduce it myself anyways.

Ross

Good luck tomorrow Ross, hope everything goes smoothly.

All the best Wossy!

Good luck

Right just back. The fuelling went from 10% over c02 to 8% over c02. So if anyone knows how to convert that to afr readings let me know!!!

I changed the boost from running 23.3 psi midrange to 22.3 psi midrange, as i wasnt comfortable with that amount of boost.

So i've dropped the over fuelling slightly but i've also dropped the boost aswell.

Ran 2 runs, as my mate didnt show so i used his, and on the second run i only got as far as 5000rpm before one of my boost pipes blew off. They repaired it but said there was practically no difference between the 2 runs so they decided not to run it again.

Got 283.3bhp at the wheels at 1.45 bar instead of 1.55.

So 5bhp increase with "slightly" reduced fuelling, and lower boost.

Im pretty happy with the result, but want to speak to GrahamL about reducing it further now im running the correct boost settings!!!

Ross

Hmm, don't wish to seem critical Ross, but a RR operator not knowing what the fuelling figures mean in relation to AFR would hardly fill me with confidence . I'm afraid that I'm still of the opinion that you are trying to do this on the cheap, and just hope that you don't cause yourself some major expense by blowing more than just a hose whilst 'experimenting'!

I also can't help thinking that your set up could offer so much more than 283 at the wheels if you did things properly. Mine is running less headwork and a smaller diameter exhaust than yours, plus a smaller turbo, but I now have 289bhp at the wheels @ 1.35 bar thanks to optimised fuelling and ignition advance .

Phil

Bearing mind you have cams. That would make a difference.

My fuelling is out yes. Well. He desribed 10% over as 10-10.5 afr. 8% over is about 10-5-11.

Think i may invest in an Adjustable Fuel Regulator instead.

Ross

Ross, everyones advice is still falling on deaf ears I see, hey its your car and your money so if its not running right then its your problem at the end of the day, we can only give you advice and you can ignore it if you want.

A fuel pressure regulator will adjust fuel for the entire rev range and not just the areas where you need it. You could have it running spot on at high revs but it could be lean as hell lower down the revs !