OPC Servicing - Modified Car?

[mk1salami]

Hi all.

My GT4 is due a 4 year service, and OPC has called me quoting £975 fixed price servicing.

Am I better going to a good independent at this stage? My car is modified (Sports Cats, IPD intake manifold, GT3 throttle body and Cobb remap). Common sense says the OPC will invalidate my warranty if they see the car in this state of tune during a service.

Would you be put off buying a GT4 if it had service history from a good independent rather than OPC?

[Twinfan]

If you're worrying about resale, I think the bigger issue is that your car is modified rather than where you had it serviced. As I understand it, the Cobb tune will mean it can never be covered under Porsche warranty again.

OPC or indie, the choice is yours.

[So]

mk1salami said:

Hi all.

My GT4 is due a 4 year service, and OPC has called me quoting £975 fixed price servicing.

Am I better going to a good independent at this stage? My car is modified (Sports Cats, IPD intake manifold, GT3 throttle body and Cobb remap). Common sense says the OPC will invalidate my warranty if they see the car in this state of tune during a service.

Would you be put off buying a GT4 if it had service history from a good independent rather than OPC?

Not as much as I would be by the other stuff you've done to it.

[thelostboy]

I guess the real question is, do you intend to keep it a fair while? If so, you may as well go independent now as your warranty is invalid anyway.

[hoegaardenruls]

Twinfan said:

If you're worrying about resale, I think the bigger issue is that your car is modified rather than where you had it serviced. As I understand it, the Cobb tune will mean it can never be covered under Porsche warranty again.

OPC or indie, the choice is yours.

Absolutely correct, the remap WILL show up as a changed field in the car's DME data - it just depends if the tech picks up on it. Realistically though, the warranty is invalid..

[gtsralph]

hoegaardenruls said:

Absolutely correct, the remap WILL show up as a changed field in the car's DME data - it just depends if the tech picks up on it. Realistically though, the warranty is invalid..

I would not be so sure that dealer level PIWIS would pick up checksum change from tune. If you have DSC suspension controller, PIWIS can’t see it so logs a PASM fault, but that is an odd physical change that can be seen on dealer level scanning of the car’s system.

Given that engine failure would mean factory level access to ECU thus basis for refusing claim under factory 3 year warranty but for other issues probably not, I would try OPC if cost similar to Indy if you want to try to retain factory warranty cover (obviously extended warranty falls away with fitting of any non-standard parts)

[hoegaardenruls]

gtsralph said:

hoegaardenruls said:

Absolutely correct, the remap WILL show up as a changed field in the car's DME data - it just depends if the tech picks up on it. Realistically though, the warranty is invalid..

I would not be so sure that dealer level PIWIS would pick up checksum change from tune. If you have DSC suspension controller, PIWIS can’t see it so logs a PASM fault, but that is an odd physical change that can be seen on dealer level scanning of the car’s system.

Given that engine failure would mean factory level access to ECU thus basis for refusing claim under factory 3 year warranty but for other issues probably not, I would try OPC if cost similar to Indy if you want to try to retain factory warranty cover (obviously extended warranty falls away with fitting of any non-standard parts)

My comment was from experience - my last car went in for a 111-point check for a warranty extension, which turned up the fact the first owner had remapped it pretty much from new. However, it had been through multiple OPC's before it was identified, hence the comment about techs picking up on it.

[Discombobulate]

mk1salami said:

Hi all.

My GT4 is due a 4 year service, and OPC has called me quoting £975 fixed price servicing.

Am I better going to a good independent at this stage? My car is modified (Sports Cats, IPD intake manifold, GT3 throttle body and Cobb remap). Common sense says the OPC will invalidate my warranty if they see the car in this state of tune during a service.

Would you be put off buying a GT4 if it had service history from a good independent rather than OPC?

Indy definitely. The remap and mods will put most buyers off as the car can never be warranted by Porsche now. Save money, and get a better service, by going to a good indy.

[gtsralph]

hoegaardenruls said:

My comment was from experience - my last car went in for a 111-point check for a warranty extension, which turned up the fact the first owner had remapped it pretty much from new. However, it had been through multiple OPC's before it was identified, hence the comment about techs picking up on it.

Shows it is dependent on tune/Centre. My Cayman S with 3.8L Carrera engine ECU didn’t show up as tuned on dealer level PIWIS, but this was an Ehresmann instal and custom tune. They did spot exhaust, suspension and brake mods.. to be fair I had them audit the car when it came back from Germany so open book and good support, no warranty of course, from a enthusiast-led Centre.

[ChrisW.]

I expect to be in the same position ...

But it is rather nice not having to worry about my winter MPSupersports being Non N rated .... or which replacement battery I will ultimately fit ...

[PH01]

Modified car, they'll burn you on a stake in the car park.

Go to a proper garage, preferably not a pseudo P independent.