Attention: TDR Forum Junkies 
Installed Piers 24V performance cam and tappets in my '98, the day before towing my Jayco to Scheids, last September. Arriving at Scheids, I unhooked and did the sled pulls. Since that time I've been testing the cam with different injectors both in competition, daily driving and towing. The B1 turbo, Blue Chip Premium FMS and timing box have not been changed during the testing.
This camshaft has exceeded my expectations. Let me explain... ... ...
Piers Cam improves turbo spooling, egts, fuel mileage while towing (I seldom check mileage empty), it broadens the torque curve of the engine, makes less smoke and more horsepower. The additional HP may only apply if you have fueling mods but the cam definately pulls harder near defueling rpm.
The cam does not give the "instant gratification" of a good set of 100hp injectors or a major fueling box. The cam change may be even more subtle then a turbo change. But most fueling or air modifications have draw backs such as higher egt's, more smoke off (or on) boost, turbo lag, turbo housing too slow for towing, high boost/blown head gaskets, etc. This cam doesn't have any negatives (other then the purchase and installation). It has performed well with the Bully Dog 8's injectors on down to the DD1's that I'm presently running. The big B1 Bomber turbo spools as quickly with the DD1's as it did previously with DDIII's (no electronic enhancement turned on).
Overall my experience with the PDR camshaft is all positve--no drawbacks. The installation is not for those that struggle with oil changes but is doable for serious home mechanics that own a service manual. I believe that the PDR cam delivers more air ... ... ... a good thing for the ISB
.
Larry
This camshaft has exceeded my expectations. Let me explain... ... ...
Piers Cam improves turbo spooling, egts, fuel mileage while towing (I seldom check mileage empty), it broadens the torque curve of the engine, makes less smoke and more horsepower. The additional HP may only apply if you have fueling mods but the cam definately pulls harder near defueling rpm.
The cam does not give the "instant gratification" of a good set of 100hp injectors or a major fueling box. The cam change may be even more subtle then a turbo change. But most fueling or air modifications have draw backs such as higher egt's, more smoke off (or on) boost, turbo lag, turbo housing too slow for towing, high boost/blown head gaskets, etc. This cam doesn't have any negatives (other then the purchase and installation). It has performed well with the Bully Dog 8's injectors on down to the DD1's that I'm presently running. The big B1 Bomber turbo spools as quickly with the DD1's as it did previously with DDIII's (no electronic enhancement turned on).
Overall my experience with the PDR camshaft is all positve--no drawbacks. The installation is not for those that struggle with oil changes but is doable for serious home mechanics that own a service manual. I believe that the PDR cam delivers more air ... ... ... a good thing for the ISB
. Larry
, a lot of folks are investing time and $'s getting ready and I'm just maintaining :-laf :-laf. Larry
. I'm watching the twin development and hope that the camshaft will allow the twins to be more efficient... ... ... when I get them. I appreciate that you and others are willing to refine them. 
too... As if winning isn't cool enough. 
