Reading about the "Green" ECU tune and the EGR delete function got me
thinkin.
It was mentioned that the EGR should not be blocked off because it allows
some high pressure intake air to bleed off when letting off the throttle.
Isn't this what a blow-off valve does?
At what PSI does the EGR "blow-off" excess air?
Why does a diesel, with no throttle plate, and a variable geometry turbo
need this function? Isn't the turbo supposed to do this? (i.e. because the
turbo has no waste gate)

So if I really wanted to completely block off or remove the EGR, should I
install some sort of relief valve? (i.e. blow-off valve)

What do you guys think?

_________________
U.S. Army Retired

Intelligent blow-off valve (world's first!), and no..................

_________________
'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go

I'm thinking the surges in a throttle-less diesel are far less abrupt than a gasser, and this is a non-issue.

_________________
'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---

Thats what I was thinking too.

_________________
U.S. Army Retired

same here... and the only time i have heard the turbo go into over speed is when i was power breaking then abruptly let off the fuel.. a guy standing at the side of my truck didn't believe it was a turbo diesel so i showed him....

_________________
Trevor

'05 Limited CRD Inferno Red Pearl Coat
Home made provent installed @ 35443, SEGR installed @ 35466, Fumoto valve @ 37500, trans and transfer case skid, In tank pump installed @ 43500, Suncoast TC & Transgo Shift Kit @ 44730, EGT, Boost, Trans temp gauges, Samco hoses, Rebuilt Trans w/ HD454RFE kit @ 56K, Inmotion Stage 2 @ 56K

Nice! I tried that with my VW, stupid computer shuts off the fuel and won't let the turbo spool.

_________________
'05 Liberty CRD B100, SEGR - SOLD

'01 Beetle TDi B100, EGR delete
'83 Mercedes 240D B100, no EGR

--- SEGR Builder ---