Pre VS Post pyro......

[geonc]

WHOLY SH------NIKE what a difference...and temp seems to build QUICKER

every bit of 300 degrees difference.....pulling a reasonable grade at 2800 turns at 80 mph--14 lbs boost/800 deg.................... and bury the pedal... 25 lbs boost and can easily pass 1300 deg barely made 1k reading post turbo stack temp.

Same Auto Meter 12v powered pyro guage and thermocuple....just moved from post to pre when I had the engine out....easier to drill the collector flange

Exh is WIDE open from gutted EBPV back,,,,nutin' but hollow pipe.

DAYM........

 

[94f450sd]

yup time for an intercooler although i can still hit 1500 degrees easily even with the IC but it takes a little longer to get there as opposed to no intercooler

 

[FaC]

I never had the post but I was amazed when I put the pre-turbo pyro on. I was seeing 1350 on a stock 7.3 6sp pulling a TT going eastbound on I-40 just past the split with I-85 in Durham (really EASY grade). Of course that revelation led to more expense - I ended up putting on a Walker BTM. That was a cheap way to get 50-100 degree lower EGT. That made a big difference for not much money...

FaC

 

[Mike]

Yup....... pre is the best place and this is the reason geo.

 

[geonc]

Yup....... pre is the best place and this is the reason geo.

I agree completly just had to wait for the opportunity to drill and tap the collector

 

[Mark Craig]

geonc,

Been saying this for years, now go get a trailer and a 4% grade and be in a hurry! You'll see a 600 degree difference really easy!!

Mark @ DPPI