Hey, am having issues at the top end of the rpm range on my 02 1.8T turbos S (180HP AWP); I have about 70K and have never replaced the DV. I have taken it out; inspected it and tried the "test" as noted in the lined .pdf below. When you are getting at the top end of the power curve; the turbo seems to hesitate and then recover and the boost increases as normal . After researching on line and trying to think things thorough.... the DV seems like a possible culprit! I tested it using this guide:
http://www.vaglinks.com/Docs/Misc/VAGLinks.com_DIY_Testing_a_Bosch_Diverter_Valve.pdf
I'm still trying to determine at what level of potential "failure" it is or isn't at; the valve does hold vacuum but for how long... and how much movement is questionable... I have seen other types of valves "seem" ok but are in fact bad (e.g. I had the infamous egr recirculation valve fail as well). My stock DV is the original # 06A145710A and it seems now the current is 06A145710N. I can get another stock DV for around $50; meanwhile, because of the failure prone nature of these... I have been looking at a more reliable aftermarket options.
Diverter Valve, 710N (OEM)
(06A145710N) $49.95
MJM Autohaus
What have people's experiences been with the stock DV? Does it sound like @ 60K; a failure makes sense at this point? Failure seems to be common but also related to many who have upgraded turbos and crazy psi levels. After doing tons of reading; the APR unit seems like a good choice, it is a diaphragm design, doesn't require maintenance like the Forge units (e.g. 710N) and has some performance benefits as well... $150.
APR R1 Diverter Valve
APR R1 Diverter Valve
The Eurospec unit looks interesting but I can't seem to find much info or reviews about it online; seems $50 less then the APR.
Diverter Valve, Billet Steel
(EPV145710)
http://www.mjmautohaus.com/catalog/..._Diverter_Valve_Billet_Steel&products_id=1901
The reviews seem to related two main points: eliminate a common fail part and improved performance; I'm trying to determine if its worth the extra $$. The bosch part has a 1 year warranty. My car is totally stock at this point; I would appreciate people's comments, experiences and recommendations!
http://www.vaglinks.com/Docs/Misc/VAGLinks.com_DIY_Testing_a_Bosch_Diverter_Valve.pdf
I'm still trying to determine at what level of potential "failure" it is or isn't at; the valve does hold vacuum but for how long... and how much movement is questionable... I have seen other types of valves "seem" ok but are in fact bad (e.g. I had the infamous egr recirculation valve fail as well). My stock DV is the original # 06A145710A and it seems now the current is 06A145710N. I can get another stock DV for around $50; meanwhile, because of the failure prone nature of these... I have been looking at a more reliable aftermarket options.
Diverter Valve, 710N (OEM)
(06A145710N) $49.95
MJM Autohaus
What have people's experiences been with the stock DV? Does it sound like @ 60K; a failure makes sense at this point? Failure seems to be common but also related to many who have upgraded turbos and crazy psi levels. After doing tons of reading; the APR unit seems like a good choice, it is a diaphragm design, doesn't require maintenance like the Forge units (e.g. 710N) and has some performance benefits as well... $150.
APR R1 Diverter Valve
APR R1 Diverter Valve
The Eurospec unit looks interesting but I can't seem to find much info or reviews about it online; seems $50 less then the APR.
Diverter Valve, Billet Steel
(EPV145710)
http://www.mjmautohaus.com/catalog/..._Diverter_Valve_Billet_Steel&products_id=1901
The reviews seem to related two main points: eliminate a common fail part and improved performance; I'm trying to determine if its worth the extra $$. The bosch part has a 1 year warranty. My car is totally stock at this point; I would appreciate people's comments, experiences and recommendations!