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Discussion Starter · #1 ·
I'm currently at 5psi, about to move up to 8psi. Need to get a BOV sorted first though!



The Splitter is a truly remarkable valve that gives a combination of blow off and recirculation valve operation all at the same time and has been specifically designed for the many turbo engined applications that operate metered airflow management sysyems. This means you get all the noise of the blow off valve whilst retaining the compatibility with the recirculation requirements of the engine management system. As a bonus we also offer the ability to convert the valve to recirculation only mode for those times when stealth running is required.

This valve uses a Copper and Zinc alloy piston which utilises new sealing technology along with a variable spring preload incorporating a ratchet type top adjuster that will allow for the positive and precise adjustment to match the valve to your engine. This is achieved by using a unique single, conical, progressive rate spring that can allow for the retention of boost pressure over a wide adjustment range. This unique spring design also allows for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and a reduction in flow volume.
(I'm running the begi kit with IC and MAF deleted)
 

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Discussion Starter · #6 ·
Where to mount?



1. On the angle piece - pre IC - it's near the intake to route the recirc piping
2. On the first straight - pre IC - requires welding - it's near the intake to route the recirc piping
3. On the straight up from the IC - close to the TB - requires welding - miles away from the intake for recirc piping

Thoughts?

How do people adjust these without a rolling road? Just keep pulling over to adjust?
 

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I think probably position 3, closest to the throttle body. This would mean that when the TB closes the air pushing back towards the turbo is dumped immeadiately and then the turbo doesn't have to overcome a larger body of air returning towards it when the throttle is re-opened. This would give you possibly slightly better response from the throttle maybe? Obviously though as what you're buying can operate as either a VTA or as a recirc there will be a longer pipe to fit for the recirc, but by the TB I think would allow the VTA to work better.
 

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Agreed. I have a tapping kit that is the right size so I can fit it to the silicon elbow piece. I'll run it VTA until I can get the other bits together.

It arrived today and it is a gorgeous bit of kit!
 

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i cant see location is going to make naff all difference.
Its a pressure thing... the whole intake pipe will be at the same pressure and any vac hose will be near as damn the same vac no matter its length unless it is soft and collapses.
 

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On my old car I mounted mine close to the turbo. I then re-fitted a new intercooler and pipe run and relocated the DV pre-throttle body - Sod all difference was made. It still vented and spooled up the same.
 

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Discussion Starter · #12 ·
Well in the interests of doing this DIY and cheap I'm fitting it just after the turbo, pre-IC. I can get a piece of tube made up for next to nothing with the right port on it. The silicon bends are pretty expensive.

Should have it fitted this weekend.

Forge are seriously good quality, Chris who has been answering my emails has a MX5 himself and has been really helpful. Highly recomended.
 

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Discussion Starter · #13 ·
FITTED!!

It wouldn't vent enough with just the VTA open so I've had to open the re-circ to atmosphere too - works brilliantly and sounds amazing.

Will be fitting the recirc stuff when the car is at the garage for some spraying. Highly recomend this bit of DV.

Photos to follow.
 
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