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Milltek Exhaust On Stage Four Is It Possible


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#1 vxtnewbie1

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Posted 17 January 2019 - 09:33 PM

Im looking at a vx, owner says it's stage four + with dyno printout, it has a milltek exhaust. I thought the miltek was only 2.5 inch, and a 3inch was needed for anything above stage four and above.

 

Owner is claiming 320bhp with dyno printout



#2 WrightStuff

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Posted 17 January 2019 - 09:38 PM

Aimy used to run around 300bhp on a 2.5" Miltek : http://www.vx220.org...k-dyno-results/

 



#3 iram

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Posted 17 January 2019 - 10:51 PM

i ran 428hp on a miltek  2.5"  so never quite got the "you need a 3 inch for 300hp" statement!  id be more interested in your case what turbo and other mods it has to get to 320hp to gain your answer!  regards iram



#4 VX DAVE

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Posted 18 January 2019 - 12:46 AM

I used to have a mk4 astra

 

z20 LET    but with a z20 LEH turbo, VXR injectors (blue) EDS cams, EDS 3.5 software, Milltek 2.5 turbo back exhaust system,  RR'd at MPG Cheshire, 324 bhp



#5 mbes2

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Posted 18 January 2019 - 11:20 PM

I used to have a mk4 astra

z20 LET but with a z20 LEH turbo, VXR injectors (blue) EDS cams, EDS 3.5 software, Milltek 2.5 turbo back exhaust system, RR'd at MPG Cheshire, 324 bhp


It's the vx tubby intake temps it can't handle compared to a front rad intercooler system.

#6 oblomov

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Posted 19 January 2019 - 11:45 AM

I run 300bhp on a 2.5 Miltek without problems. Your 3" idea is incorrect.






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