View Full Version : 710 vs 710n

06-29-2004, 06:09 PM
is there a difference. i got a 710 bpv and it is the exact same number as my stock one on my a4. does it have to say 710n on the part?

06-29-2004, 06:47 PM
If it doesn't say 710N then it's not one. The stock vs. 710N part numbers are 058 145 710 vs. 06A 145 710N.

06-29-2004, 06:54 PM
****indamnit, i just replaced my stock one with a.... stock one. oh well, ill let it go for a while before i get the 710n

06-30-2004, 05:17 AM
well if you had replaced it with a TT stock one, you'd be set ;)

06-30-2004, 07:02 AM
I've got a question, do you have to replace the stock A4's BPV with a BPV from a TT or aftermarket? Can you just leave the stock A4's BPV for a few months, and then get a TT one, or is it a necessity that you shuold do it around the same time as you chip? Thanks guys

06-30-2004, 07:08 AM
It's definitely not some urgent emergency to get the BPV upgrade right away. But eventually, especially when you boost a lot with your newfound power, your stock one will goto doo doo.

The stock TT one (aka 710N) is a very adequate upgrade and is pretty cheap. It lasts people more than 30K miles, and helps noticeably reduce turbo lag. A BIG improvement over the stock BPV.

If you wanna shell out some more dough, you can always go for the Bailey's or Forge which are considered sorta top-of-the-line. Most people say that you can't actually feel a performance difference from the TT one, but they are more durable and makes your turbo sound a little cooler (so I've heard).

710N is good, most people have that.

06-30-2004, 11:08 AM
I have a 710N like most folks around here and my only complaint is the longevity of the valve. After 25-30K miles it can begin to make a honking noise during part throttle coasting or light throttle on hills. Sounds like crap. At the budget price of $25 per valve, it's still cheaper to buy four 710N valves than one used Bailey or Forge BPV. Just more of a pain to swap it out I guess.

Here's the details on the honking noise:


06-30-2004, 11:22 AM
You always try the Porche 110 valve. About $40-50, but should last longer than the 710N and should hold more boost with reliability.

Personally, the 710N is fine for me.

06-30-2004, 11:23 AM
is the diverter valve the same thing? i have an offer for a 710 bosch diverter valve for 15 bucks

06-30-2004, 11:29 AM
Originally posted by xburbx
is the diverter valve the same thing? i have an offer for a 710 bosch diverter valve for 15 bucks

[confused] [confused] In your first post you stated that's what you had.

If you're asking if a DV is the same thing as a BPV, then the answer is yes.

06-30-2004, 11:34 AM
oh, ok, i didnt know they were the same thing. then yes that is what i have.