996 TT Diverter valves
Discussion
saulk said:
Would you advise changing these on a stock TT? Would there be any benefit or just a waste of money?
cheers.
cheers.
DV's are known to blow the diphragms. But to change them is hugely expensive for the rewards of minute throttle improvements and tiny reduction in lag. You might also void any warranty!
silver993tt said:
About 16 quid each and took me about 40 mins on my 993tt where there was not alot of room for my hands.
996TT single billit alloy dv's around £80ish each. Maybee £100 for real good ones. OPC to do work so as not to compromise warranty - 3 hours?
Remember, the 996TT engine bay is a lot more crowder than a 993TT.
andrew medway said:
silver993tt said:
About 16 quid each and took me about 40 mins on my 993tt where there was not alot of room for my hands.
996TT single billit alloy dv's around £80ish each. Maybee £100 for real good ones. OPC to do work so as not to compromise warranty - 3 hours?
Remember, the 996TT engine bay is a lot more crowder than a 993TT.
The original's are the same as the Audi TT (and cost about 16 quid each) and are made of plastic with a diaphram. Billet alloy diverters are not standard and an OPC wouldn't install them for that reason. I would also hope that the 'experts' at the OPC would install them in alot less time than 3 hours. They might bill you for an hour's labour at most.
andrew medway said:
silver993tt said:
About 16 quid each and took me about 40 mins on my 993tt where there was not alot of room for my hands.
996TT single billit alloy dv's around £80ish each. Maybee £100 for real good ones. OPC to do work so as not to compromise warranty - 3 hours?
Remember, the 996TT engine bay is a lot more crowder than a 993TT.
Is that you buy the DV's yourself and Porsche will fit them for you?
Cheers guys
silver993tt said:
andrew medway said:
silver993tt said:
About 16 quid each and took me about 40 mins on my 993tt where there was not alot of room for my hands.
996TT single billit alloy dv's around £80ish each. Maybee £100 for real good ones. OPC to do work so as not to compromise warranty - 3 hours?
Remember, the 996TT engine bay is a lot more crowder than a 993TT.
The original's are the same as the Audi TT (and cost about 16 quid each) and are made of plastic with a diaphram. Billet alloy diverters are not standard and an OPC wouldn't install them for that reason. I would also hope that the 'experts' at the OPC would install them in alot less time than 3 hours. They might bill you for an hour's labour at most.
But I presume the original question is regarding upgrading as it does not say the originals are faulty, nor does it make sense to replace a working component with exactly the same replacement part.
As for time, I looked into this and that was what I was glibly quoted. I would imagine an indie wold see the job off in an hour tops, but that's OPC's for you.
The main concern, for me anyway, was the warranty. Its the same for chipping these cars to turn up the boost. If they find out when something goes wrong they can and will fight any claim.
andrew medway said:
saulk said:
Andrew,
Sorry my fault I did mean replacing these with metal/piston Dv's. Doh!
Sorry my fault I did mean replacing these with metal/piston Dv's. Doh!
Looked into the same myself. Would make little difference (I was told) to performance. Also, dv's do fail but rarely.
My concern for you would be said warranty.
Thanks, that covers that for me.
andrew medway said:
saulk said:
Andrew,
Sorry my fault I did mean replacing these with metal/piston Dv's. Doh!
Sorry my fault I did mean replacing these with metal/piston Dv's. Doh!
Looked into the same myself. Would make little difference (I was told) to performance. Also, dv's do fail but rarely.
My concern for you would be said warranty.
They make limited difference to performance, with the upstream bleed via the diverter aiming to helping pick-up when you re-apply the throttle.
However, to say that they fail rarely might not be true - the plastic Bosch diaphragm ones fitted by Porsche are adversely affected by the engine bay heat (so maybe worse in 993 than 996?). I changed the ones on my 993 myself for the Forge piston ones - easy quick job and one of the original Bosch ones did prove to be faulty - it failed the "suck" test.
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