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Stick with the standard valve! The J valve only increases your boost spike, which if you have the car remapped already would take it out of the safety parameters!!

We have some great offers on Custom-Code software coming up to Christmas which are listed on the JBS website link below:-

http://www.jbsautodesigns.co.uk/deals/7/phase-1-remap-package-deal-18-20v-t-dbw

If you have any further questions or queries please feel free to give us a call on 01246 455 005.

Look forward to hearing back from you.

Seb Hampson

Parts/Sales Advisor.
 

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764 Posts
What he said /\

Mine was changed by the previous owner and it drive like poo poo. Now got the rite one in and it runs so much better.

And im my opinion just changing the N75 does very little for performance.
 
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