MK4 GTI 03 blow off valve question

[kaanage]

If it seems to run ok now, there's probably no benefit from fitting a recirculating one.

I thought that recirculating back to the inlet help keep up inlet pressure so that the engine wouldn't fall off boost between upshifts

[h100vw]

I thought that recirculating back to the inlet help keep up inlet pressure so that the engine wouldn't fall off boost between upshifts

The fall off in boost between shifts, is more down to the build up of pressure behind the throttle plate causing the compressor to slow down, rather than the recirculated boost.

I always understood the problem with not recirculating back into the inlet, was more to do with the loss of metered air. Causing the ECU to get confused.

Gavin

[noone]

The Forge 008 is a nice bit of kit, there are cheaper options.