Attention: TDR Forum Junkies 
Hello to the Forum
A few months back I was allowed to test a Turbo-Air-Guide for Diesel Power Products. At the time, I made a promise not to post any info without their permission. Most of my testing is completed with some interesting numbers. I visited Diesel Power Products up in Pasco and submitted my results and with their permission the following is put forth for the forums consumption. I've run just over 3,000 miles with the TAG installed.
Mileage Gain - Marginal at . 05 to . 10 . If I could get about 6 hours on a dyno, I could get valid mpg numbers. My problem is weather conditions and varying driving conditions with respect to headwinds and traffic flows.
Power Gain - Unable to establish reliable, repeatable #'s on the G-tech. Once again this has to do with varying conditions and manual shifting.
DEQ results. I contacted Oregon's DEQ Department and was given permission to use their Dyno in Scappoos, Oregon to measure emissions. The results are very interesting. Four test were run. 1st test was with no TAG and the truck in base line condition, meaning the EDGE Box was OFF. 2nd test was with the EDGE Box turned ON and in Level 1. 3rd test was with the TAG installed and the EDGE Box turned OFF. 4th test was with the TAG installed and the EDGE BOX turned ON and in Level 1.
Date was 3 Oct. 2003
-------------- THC-- NOX -- CO--- CO2-- FUEL mpg -- -- HP----- Time
Standard - 1. 20 -- 2. 70 -- 26. 0 -- -N/A -- -- N/A ---- N/A
No TAG
1st OFF -- 0. 17 -- 10. 15 -- 0. 8 -- 763. 1 -- 11. 59 -- 19. 50 -- 13:08
2nd ON -- 0. 17 -- 11. 22 -- 0. 7 -- 765. 2 -- 11. 64 -- 19. 50 --13:16
TAG Installed
3rd OFF -- 0. 16 -- 9. 88 -- 0. 8 -- 749. 1 -- 11. 84 -- 19. 50 --13:51
4th ON -- 0. 18 -- 10. 64 -- 0. 7 -- 739. 9 -- 11. 85 -- 19. 50 --13:54
Between test 2 and 3 the TAG was installed and the engine kept an a varying idle to keep the temp up for consistency in testing.
These numbers were generated by their testing equipment based on a truck with a GVW of 8499. If we had used the real GVW the computer would not have allowed the test. Each test was a series of 4 accelerations to 30 mph and back to 0 mph. Truck mileage at the time was 102,000 with the original turbo, lift pump and original VP-44. Motor mods were 275 injectors, 4 inch exhaust, BHAF filter, EDGE-COMP in Level 1 for test 2 and 4. TAG installed for test 3 and 4. Highest gear hit was 4th out of the 6. 1st gear was never used. Motor temp was at 187 degrees for all test. This info was provided by the Road Relay 4 in the cab. I was not allowed to do the driving, but was allowed to sit in the cab with the tester. Sarina and Terry were the DEQ reps.
It is noted that the emission dropped with the TAG installed. I am waiting for towing opportunity's, as Diesel Power Products says that this is where they see the biggest gains for our Cummins. One thing that is noted, is that the TAG was developed with the FORD in mind and that it why they see the best gains. It is also noted that the FORD turbos have a much smaller inlet (2. 5) than the Cummins (3. 0). This is probably the biggest reason that the FORDs see the gains. Their turbo efficiency is not as good as the Cummins (personal opinion).
I turned over copies of the DEQ papers and performance plots to Diesel Power Products for their testing files.
In looking at what I have seen so far with the TAG, the benefits for us, Cummins owners, would be in reducing emmisions. When I get my next towing opportunity to check mileage, I will post the results. I believe this is a good product for the FORDs, but for us the jury is still out with more testing to be done. I look forward to the towing to see where this leads.
Thanks for taking the time to read this.
A few months back I was allowed to test a Turbo-Air-Guide for Diesel Power Products. At the time, I made a promise not to post any info without their permission. Most of my testing is completed with some interesting numbers. I visited Diesel Power Products up in Pasco and submitted my results and with their permission the following is put forth for the forums consumption. I've run just over 3,000 miles with the TAG installed.
Mileage Gain - Marginal at . 05 to . 10 . If I could get about 6 hours on a dyno, I could get valid mpg numbers. My problem is weather conditions and varying driving conditions with respect to headwinds and traffic flows.
Power Gain - Unable to establish reliable, repeatable #'s on the G-tech. Once again this has to do with varying conditions and manual shifting.
DEQ results. I contacted Oregon's DEQ Department and was given permission to use their Dyno in Scappoos, Oregon to measure emissions. The results are very interesting. Four test were run. 1st test was with no TAG and the truck in base line condition, meaning the EDGE Box was OFF. 2nd test was with the EDGE Box turned ON and in Level 1. 3rd test was with the TAG installed and the EDGE Box turned OFF. 4th test was with the TAG installed and the EDGE BOX turned ON and in Level 1.
Date was 3 Oct. 2003
-------------- THC-- NOX -- CO--- CO2-- FUEL mpg -- -- HP----- Time
Standard - 1. 20 -- 2. 70 -- 26. 0 -- -N/A -- -- N/A ---- N/A
No TAG
1st OFF -- 0. 17 -- 10. 15 -- 0. 8 -- 763. 1 -- 11. 59 -- 19. 50 -- 13:08
2nd ON -- 0. 17 -- 11. 22 -- 0. 7 -- 765. 2 -- 11. 64 -- 19. 50 --13:16
TAG Installed
3rd OFF -- 0. 16 -- 9. 88 -- 0. 8 -- 749. 1 -- 11. 84 -- 19. 50 --13:51
4th ON -- 0. 18 -- 10. 64 -- 0. 7 -- 739. 9 -- 11. 85 -- 19. 50 --13:54
Between test 2 and 3 the TAG was installed and the engine kept an a varying idle to keep the temp up for consistency in testing.
These numbers were generated by their testing equipment based on a truck with a GVW of 8499. If we had used the real GVW the computer would not have allowed the test. Each test was a series of 4 accelerations to 30 mph and back to 0 mph. Truck mileage at the time was 102,000 with the original turbo, lift pump and original VP-44. Motor mods were 275 injectors, 4 inch exhaust, BHAF filter, EDGE-COMP in Level 1 for test 2 and 4. TAG installed for test 3 and 4. Highest gear hit was 4th out of the 6. 1st gear was never used. Motor temp was at 187 degrees for all test. This info was provided by the Road Relay 4 in the cab. I was not allowed to do the driving, but was allowed to sit in the cab with the tester. Sarina and Terry were the DEQ reps.
It is noted that the emission dropped with the TAG installed. I am waiting for towing opportunity's, as Diesel Power Products says that this is where they see the biggest gains for our Cummins. One thing that is noted, is that the TAG was developed with the FORD in mind and that it why they see the best gains. It is also noted that the FORD turbos have a much smaller inlet (2. 5) than the Cummins (3. 0). This is probably the biggest reason that the FORDs see the gains. Their turbo efficiency is not as good as the Cummins (personal opinion).
I turned over copies of the DEQ papers and performance plots to Diesel Power Products for their testing files.
In looking at what I have seen so far with the TAG, the benefits for us, Cummins owners, would be in reducing emmisions. When I get my next towing opportunity to check mileage, I will post the results. I believe this is a good product for the FORDs, but for us the jury is still out with more testing to be done. I look forward to the towing to see where this leads.
Thanks for taking the time to read this.
