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View Full Version : 710n - Diverter valve upgrade - OEM, Vaico, or Kayser?



LA4
07-31-2014, 09:25 PM
So I'm looking to get the GIAC tune that adds 47 hp and 80 pd-ft of torque- http://www.awe-tuning.com/g-i-a-c-performance-software-3

Obviously I wanna upgrade my div. valve first. I see all 3 of these say for "stock to mildly tuned engines". Other than the tune, I won't be doing any other crazy turbo upgrades, as this car needs to be my reliable DD for the next couple years.

OEM- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2639822/ - costs $63
Kayser- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2739493/ - costs $46
Vaico- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2597708/ - costs $42

I don't mind shelling out the extra 20 bucks if the oem is worth it, but from my previous experiences with audi the OEM parts are often just overpriced, not necessarily better.

I figure some of you guys have probably been running a tune with Kayser or Vaico for years now and was hoping to get some reviews before I place my order.

fed0ra
07-31-2014, 09:33 PM
So I'm looking to get the GIAC tune that adds 47 hp and 80 pd-ft of torque- http://www.awe-tuning.com/g-i-a-c-performance-software-3

Obviously I wanna upgrade my div. valve first. I see all 3 of these say for "stock to mildly tuned engines". Other than the tune, I won't be doing any other crazy turbo upgrades, as this car needs to be my reliable DD for the next couple years.

OEM- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2639822/ - costs $63
Kayser- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2739493/ - costs $46
Vaico- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2597708/ - costs $42

I don't mind shelling out the extra 20 bucks if the oem is worth it, but from my previous experiences with audi the OEM parts are often just overpriced, not necessarily better.

I figure some of you guys have probably been running a tune with Kayser or Vaico for years now and was hoping to get some reviews before I place my order.

I have the Vaico one and the valve is stamped "Kayser". The pictures for the OEM one also show a Kayser stamp. I've also read that you can't actually buy an original Bosch 710N anymore so Kayser is the way to go. But the Vaico seems to also be a Kayser, so either should work and the Vaico is cheaper.

LA4
07-31-2014, 10:41 PM
Yeah I looked at the DIY guide on here for the div valve and saw the bosch was recommended but i can't find them to purchase anywhere.

Guess I'll definitely go w/ the vaico then, thanks, you saved me some money.

coolgraymemo
07-31-2014, 11:08 PM
I know of someone that might be selling an aluminum diverter valve (Bailey). PM me for more details.

malanca
07-31-2014, 11:20 PM
It's correct that BOSCH doesn't make the diverter valves anymore; Kayser took over the production and this is certainly not an improvement. I threw my Kayser 710N out and replaced it by a TurboSmart plumb-back BOV (FG-BOV-KTPB25):

http://i60.tinypic.com/jt9vyq.jpg

ricekikr
08-01-2014, 12:15 AM
No need to replace dv, unless broken or just want to replace while in there.

The stock one holds 35+psi just fine.

If no plans on going 25+psi a forge 007 works well, if more a 50mm dv/bov is needed. It also holds 35+psi but like the oem one can't release pressure quick enough at 25+psi.

pichno
08-01-2014, 12:40 AM
So I'm looking to get the GIAC tune that adds 47 hp and 80 pd-ft of torque- http://www.awe-tuning.com/g-i-a-c-performance-software-3

Obviously I wanna upgrade my div. valve first. I see all 3 of these say for "stock to mildly tuned engines". Other than the tune, I won't be doing any other crazy turbo upgrades, as this car needs to be my reliable DD for the next couple years.

OEM- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2639822/ - costs $63
Kayser- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2739493/ - costs $46
Vaico- http://www.ecstuning.com/Audi-B5_A4-Quattro-1.8T/Engine/Turbocharger/Diverter_Valve/ES2597708/ - costs $42

I don't mind shelling out the extra 20 bucks if the oem is worth it, but from my previous experiences with audi the OEM parts are often just overpriced, not necessarily better.

I figure some of you guys have probably been running a tune with Kayser or Vaico for years now and was hoping to get some reviews before I place my order.

DEFINITELY a good idea to change out the DV for an upgraded 710N from the TT225. I ran the same one on my Stage 1 K03, and now tuned K04 w/ no issues. I found mine for $50 new-OEM TT225. Honestly, I don't see ANY reason to go with anything fancier when the one mentioned here is 150% capable, and for far less cost (i.e. 1/2 price) than something like a Bailey OR APR R1 running $100-$150. IMHO, I chuckle when hearing someone decides to go that route for a DV. Hope this helps.

http://www.ebay.com/itm/NEW-GERMAN-VW-1-8t-Turbo-DIVERTER-VALVE-GTI-GLI-Golf-Jetta-Beetle-Audi-TT-SAAB-/130992042385?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e7fbbf191&vxp=mtr

malanca
08-01-2014, 02:55 AM
http://www.ebay.com/itm/NEW-GERMAN-VW-1-8t-Turbo-DIVERTER-VALVE-GTI-GLI-Golf-Jetta-Beetle-Audi-TT-SAAB-/130992042385?pt=Motors_Car_Truck_Parts_Accessories&hash=item1e7fbbf191&vxp=mtr

Well I would be carefull with those so called German Ebay parts, this thing looks like a knock-off. Despite the shaven off area's I doubt wether this is a Kayser. Here my OEM Kayser:

http://i61.tinypic.com/1ethlt.jpg

The Kayser isn't as good as the BOSCH, that's the reason I choose the TurboSmart.

pichno
08-01-2014, 03:10 AM
Well I would be carefull with those so called German Ebay parts, this thing looks like a knock-off. Despite the shaven off area's I doubt wether this is a Kayser. Here my OEM Kayser:

http://i61.tinypic.com/1ethlt.jpg

The Kayser isn't as good as the BOSCH, that's the reason I choose the TurboSmart.

LOL for many reason...

1. Reliable Seller
2. Indicates ACTUAL OEM part with just logo shaved off meaning "re-sale of new part" however that wouldn't bother me
3. FULL Warranty
4. Satisfied Customer Feedback

End Result-No reason to be worried IMHO

Nevertheless, if this part worried someone, purchasing a BOSCH 710N is still the better way to go IMO

malanca
08-01-2014, 04:25 AM
The problem is the BOSCH types have become rare while BOSCH doesn't produce these anymore. So in the nearby future you can't get the BOSCH at all.

Many Kayser produce the famous 'moooh' sound which isn't quite the thing you want.

The TurboSmart is running very fine and more accurate than the Kayser OEM but that is just my experience.

Davdraco1
08-01-2014, 06:06 AM
I have the Kayser one. I bought it when I got my new n75. No issues there. I'm not tuned so I can't speak for that but it seems fine.