Dump valve delete for flutter?

4401 Views 7 Replies 3 Participants Last post by dtrump, Sep 10, 2019

dtrump

Discussion Starter · Sep 9, 2019

Probably a silly question.....

On Nissan Silvas with an sr20det engine you can remove the dumpvalve and then you hear a lot of turbo fluttering.

Is the same possible on a R56 JCW?

I currently have a HKS intake fitted and while I enjoy the intake suction noise, the dumpvalve noise is something I'd like to mute or change

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knt

· #2 · Sep 9, 2019 (Edited)

Short answer NO.

If you want to hear something similar HKS does a kit for MINI but expensive.

Other alternatives are the Forge and Turbosmart 50/50 type diverter.

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mike1967

· #3 · Sep 10, 2019

pull the cat out move the 02 sensors closer and map it for pops and bangs also push the power up at same time,, but only do such tricks on a good engine with good timing chain otherwise its wasted, the turbo on prince engine has divertor type turbo ecu controlled etc, kkk type turbo

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dtrump

Discussion Starter · #4 · Sep 10, 2019

Thanks for the replies.

I guess changing the spring inside the diverter valve so that its extremely stiff will result in some flutter or could remove it completely and using a blanking plate.

Anyone recommend where to get the hardest springs from?...I've seen the Alta but not so sure how different it is?

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knt

· #5 · Sep 10, 2019

I think Turbosmart does spring but not sure it it's for the OEM, most likely to be for their own product.

Another alternative is the GFB Australian product.

GFB T9352 DV+ Diverter Valve for sale online | eBay

Find many great new & used options and get the best deals for GFB T9352 DV+ Diverter Valve at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Dump Valve Spring (Single) | FMDVSU110 | Forge Motorsport

These are the individual springs sold in our FMDVTUN kit. Please select the colour you require using the options above. Valve Spring...

www.forgemotorsport.co.uk

N14 or N18 JCW?

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dtrump

Discussion Starter · #6 · Sep 10, 2019

knt said:
I think Turbosmart does spring but not sure it it's for the OEM, most likely to be for their own product.

Another alternative is the GFB Australian product.

GFB T9352 DV+ Diverter Valve for sale online | eBay

Find many great new & used options and get the best deals for GFB T9352 DV+ Diverter Valve at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

Dump Valve Spring (Single) | FMDVSU110 | Forge Motorsport

These are the individual springs sold in our FMDVTUN kit. Please select the colour you require using the options above. Valve Spring...

www.forgemotorsport.co.uk

N14 or N18 JCW?

It's a 58 plate jcw

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knt

· #7 · Sep 10, 2019

If you just want to swap the internal parts, have a look on North American Motoring as VAG diverter internals can be changed over as it's stronger.

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dtrump

Discussion Starter · #8 · Sep 10, 2019

knt said:
If you just want to swap the internal parts, have a look on North American Motoring as VAG diverter internals can be changed over as it's stronger.

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