I'm a little concerned about this. My '18 Abarth, bought new a year ago, had a problematic diverter valve from about mile 150. Discussing it with the dealer's service manager and level 3 mechanic, they actually recommended the GFB DV+ instead of an OEM replacement. ("You'll be back in here in six months, otherwise," the mechanic told me.) The service manager recommended against the Forge unit because it might end the warranty, but said the GFB was an OEM-equivalent replacement and wouldn't affect coverage.You could probably argue on the GFB on the basis you can, technically, replace parts with non-oem parts of equivalent performance. The problem would be trying to figure out where the onus of proof would lie in showing the GFB is, or is not, 'of equivalent performance'. Of course, the tune is still an issue.
A piggyback ECU won't help you. The wiring harness is still highly visible under the hood and not easily removed. I was almost denied warranty work because they spotted it at my dealer. Luckily the tech looked the other way but he did warn me.This is why you want to use a piggyback ECU--especially under warranty. Just remove it and everything is stock again. And I don't understand why everyone is changing all these other parts? My 500 Abarth is almost stock, except for the piggyback, and I added 40 hp and 75 ft lbs of torque, at the crank. I have an Ultra Gauge where I can monitor mixture. Under boost, it beings to go rich and gets richer and richer until 5000 RPM, where they go full rich. See the dyno chart attached. I've never heard of anyone having engine trouble with this tune. Check out 500 Madness for this. I'm going to leave my Urbana stock until the 4 year warranty is up. I have my 500 Abarth to play around with Porsche Boxsters.......
but with a piggyback unit you can have the car serviced at an indie shop that doesn't care at all whether it's present or not and if the car ever does run into an issue requiring the usage of the warranty, you can remove the unit to take the vehicle to a dealership - a pain, i hear, but worth the time should you run into an expensive repair and be still under warranty.A piggyback ECU won't help you. The wiring harness is still highly visible under the hood and not easily removed. I was almost denied warranty work because they spotted it at my dealer. Luckily the tech looked the other way but he did warn me.
Dateline Denver, CO
Last Friday while traveling north on I-25, center lane, 65mph, the check engine light comes on and immediately the car starts running rough ...actually the check engine light is flashing, rather then full on. Could not pull over, so kept going on, on 3 cylinders. I drove it back to my house and dropped it off at a local mechanic that I use. They called and said that they would not touch the car, but to have Fiat Roadside Service tow to the dealership. I had burnt a spark plug and they did not know what other damage might be inside.
Fiat Autonation in Northglenn took the car in, gave me a call and immediately said that because I had a GFB DV+ and a blow off adapter plate on the turbo, any warranty claim was cancelled. ...plus a tune that they may have caused leanness. The worst case would be that the cylinder head would have to be replaced at a cost of $4700, or the least worst case, a exhaust valve, for much less ....but either case, it will be a bitch getting into the tightly fitting engine. It is a burnt valve.
So, a word to the wise on adding stuff under the hood and keeping your warranty.
I can't imagine it would be the GFB DV value. That's the best thing I've added to mine. The OEM one is a POS.I'm not clear on this. Was the GFB DV+ used to deny the warranty, or was it the EC tune? Because I'm under the impression that Fiat has stated that the items like the GFB will not be used to deny warranty claims, but tunes will. My own dealer certainly thinks so.
I'm guessing that for $2842 you were given a full written report providing a detailed explanation of the issue and the root cause ? Also, what milage/time warranty have they provided for the repair ?
Hope you get a warranty for the work done for at least a year.To put a final wrap on this, I got my car back today, and I still have the tune in the computer ...knew it right away with the 'pops and bangs'. They pulled the engine and installed 2 engine exhaust valves, 4 various gaskets (head, cam carrier, exhaust and ?), 4 new spark plugs, oil change ...all for a total of $2842 ....runs great!
It is important to make sure that the problem does not return. You said that you burnt an NGK plug? Was that an OEM plug, or a different rating? What do you mean by "driving continuously on P1"? Do you have an option to switch out of P1? In any case, I would regularly check that OEM-type plug to see that it has a nice dry coffee-color tip and no visible wear. Even with an extended warranty on the work, I doubt that they would be happy to see you back with the same hardware and tune.