Attention: TDR Forum Junkies 
There has been a lot of discussion about 275 injectors, performance and mileage. What follows is my experience on the installation on a 2001. 5 extended cab 4x4 3500, six speed and 3. 54 RE. The only other mod that the truck has is the 4in. Jardine ex. Plus I have EGT and boost gauges. The 2001. 5 is my 3rd Dodge turbo. Previously I had a 96 12 valver w/ automatic and a 98. 5 Auto. Both had 3. 54 RE. They were both great trucks but I had an uncontrollable yearning for the 6 speed ETH, so I replaced the 98. 5 last fall.
STOCK RESULTS:
In November I took a 6,531 mile trip from Seattle to Niagra falls. I should add that I carry a 11 ft 6 in. Northland Camper that weighs in at 4000 lbs. plus, fully loaded. Gals of fuel used 585. 8 which gives 11. 15 mi/gal. The worst mileage was 8. 1 bucking a head wind so high that we eventually stopped. Driveability was good but it just seemed like it needed a little extra umph! (H. P. to you purists)
RESULTS W/4in JARDINE EX. ALONE:
Absolutey no mileage improvement over stock but it did seem to spool up better for a little better response.
RESULTSW/BOSCH 275's and 4 in JARDINE EX. :
The truck was loaded the same as stock with the 11ft 6 in. camper weighing 4,000 lb. plus. On this trip we drove 5,268 miles and used 471. 9 gal of fuel. Doing the math the average miles /gal equals 11. 16 or . o1 mi/gal better. However, the driveability of the truck was dramatically better. Where I previously had to shift down to make it over a mountain or incline it was not necessary or you were one gear higher. Horse power and torque were very noticeably improved without any sacrifice in mi. /gal of fuel. My worst mileage again was bucking a very high wind coming out of L. A. where I got 8. 9mi. /gal. Also,very similar to stock.
EGT & BOOST
On some very steep grades in Mont & Utah the EGT got into the yellow around 1150 deg F. , however, this could be quickly cured by backing off just a hair or shifting down. I saw nothing that was of concern. Max. boost(remember I am stock) was about 24 at which point it dumps fuel and the boost drops back to 22.
In summary, I have experienced a very noticeable increase in power. While I have not put the truck on the dyno the advertised claim of 40 to 50 hp with a correspondening increase in torque would seem to be accurate. Driveability of the truck is much better than stock.
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2001. 5 ETH 3500 6spd. 4x4,3. 54LSD,all avail. opts. incl. leather,s. s. fender trim,s. s. bug guard,stull running boards and custom flaps,line x bed liner, BD injectors plus ISPRO EGT and boost, pillar mt.
STOCK RESULTS:
In November I took a 6,531 mile trip from Seattle to Niagra falls. I should add that I carry a 11 ft 6 in. Northland Camper that weighs in at 4000 lbs. plus, fully loaded. Gals of fuel used 585. 8 which gives 11. 15 mi/gal. The worst mileage was 8. 1 bucking a head wind so high that we eventually stopped. Driveability was good but it just seemed like it needed a little extra umph! (H. P. to you purists)
RESULTS W/4in JARDINE EX. ALONE:
Absolutey no mileage improvement over stock but it did seem to spool up better for a little better response.
RESULTSW/BOSCH 275's and 4 in JARDINE EX. :
The truck was loaded the same as stock with the 11ft 6 in. camper weighing 4,000 lb. plus. On this trip we drove 5,268 miles and used 471. 9 gal of fuel. Doing the math the average miles /gal equals 11. 16 or . o1 mi/gal better. However, the driveability of the truck was dramatically better. Where I previously had to shift down to make it over a mountain or incline it was not necessary or you were one gear higher. Horse power and torque were very noticeably improved without any sacrifice in mi. /gal of fuel. My worst mileage again was bucking a very high wind coming out of L. A. where I got 8. 9mi. /gal. Also,very similar to stock.
EGT & BOOST
On some very steep grades in Mont & Utah the EGT got into the yellow around 1150 deg F. , however, this could be quickly cured by backing off just a hair or shifting down. I saw nothing that was of concern. Max. boost(remember I am stock) was about 24 at which point it dumps fuel and the boost drops back to 22.
In summary, I have experienced a very noticeable increase in power. While I have not put the truck on the dyno the advertised claim of 40 to 50 hp with a correspondening increase in torque would seem to be accurate. Driveability of the truck is much better than stock.
------------------
2001. 5 ETH 3500 6spd. 4x4,3. 54LSD,all avail. opts. incl. leather,s. s. fender trim,s. s. bug guard,stull running boards and custom flaps,line x bed liner, BD injectors plus ISPRO EGT and boost, pillar mt.
