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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Replacing my BOV with a Recirc Valve?Views : 439 Replies : 9Users Viewing This Thread : |
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Jan 28th, 2020, 20:58 | #1 |
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Last Online: Sep 7th, 2020 21:54
Join Date: Jan 2011
Location: Kendal
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Replacing my BOV with a Recirc Valve?
Hi Guys
Ive just been reading a post from 2016 in regards to atmospheric blow off valves. The reason i was searching as i am in the process of fitting a aftermarket intercooler and and remaking the inlet pipes. I previously had a atmospheric blow off valve fitted (close to the throttle) I fitted it many years ago when the 'whoosh' was more important to me than correct running! I thought i'd do more research before making the pipes and reinstalling it. Id read online and as mentioned in the post that cars with MAFs should alway recirc the air to the inlet pipe after the MAF as this air has been measured. It was also mentioned that cars with atmospheric blow off valves could have poor running when throttling off, causing the car to nearly stall. This is a problem that i have and recently asked a question about. I thought it could of been related to the injectors I'm running not the BOV. Im running a holset turbo with a load of other mods, hoping for 350bhp. In your opinions what is the best option for dumping pressurised air at throttle off? If its best to fit an after market recirc valve where is the best place to fit it? Is close to the throttle best (i read this is the best place for a atmospheric BOV) or should I fit it before the intercooler to reduce the record pipe length? I have also read a couple of tuners saying they don't run either but I'm under the impression the pressure could then stall the turbo? Thanks Guys Joe
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