Joe sure used up some of ole Oregon's trees in issue 29! On page 34 he states; "you can put larger injectors in the 24 valve and gain power and mileage. " On page 33 he specifically referred to the 275 HP Bosch. When Joe speaks, I listen! Anyone done just this enhancement and seen this result? Let's see - $800 installed and you gain 1mpg. Payback would be in 10000 miles. Now that's worthwhile.
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Better mileage! by Joe Donnelly TDR issue 29
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Tlippy... bring your truck, and injectors up here... the NW BOMBers will install them for a few beers...
Injectors $288. 00
Beer $ 10. 00
Diesel $ 30. 00
Cost of enjoying yourself forever after:
PRICELESS!
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Rob Hanson
1999 "Big Red", 3500 SLT QC 4X4 6 spd, 4. 10 LSD, Braided SS fuel lines, Mag-Hytec Rear Cover, Cummins E-Brake, Blue Box, Bosch 275HP injectors, All-steel Cowl Induction Hood, Rhino, Rosewood Kit, Scotty System, SportComp Gauges, TorkLift SuperHitch, Teshonka Brake Controller, Rear Flood lights, Cobra CB, DeeZee Running Boards, and a Geno's "I tromped a Ford" decal. Member of BOMB! (WW NW Chapter)
MyPics.com (pics updated 8/21/00)
I'd rather be... .
Cummin than Strokin.
Injectors $288. 00
Beer $ 10. 00
Diesel $ 30. 00
Cost of enjoying yourself forever after:
PRICELESS!
------------------
Rob Hanson
1999 "Big Red", 3500 SLT QC 4X4 6 spd, 4. 10 LSD, Braided SS fuel lines, Mag-Hytec Rear Cover, Cummins E-Brake, Blue Box, Bosch 275HP injectors, All-steel Cowl Induction Hood, Rhino, Rosewood Kit, Scotty System, SportComp Gauges, TorkLift SuperHitch, Teshonka Brake Controller, Rear Flood lights, Cobra CB, DeeZee Running Boards, and a Geno's "I tromped a Ford" decal. Member of BOMB! (WW NW Chapter)
MyPics.com (pics updated 8/21/00)
I'd rather be... .
Cummin than Strokin.
Yep, I tried to keep a logger employed, but hopefully you felt there was some _content_ to the artice. Other brands of injectors may work as well or better, but I don't have definite reports on them relative to mpg or longevity.
Reports are that the 275 hp Bosch injectors give 1. 5 mpg and give 33 hp (5 speed), 42 hp (ETH), or 50 hp (auto). That isn't a bad investment if you want power and mileage.
[This message has been edited by Joseph Donnelly (edited 08-22-2000). ]
Reports are that the 275 hp Bosch injectors give 1. 5 mpg and give 33 hp (5 speed), 42 hp (ETH), or 50 hp (auto). That isn't a bad investment if you want power and mileage.
[This message has been edited by Joseph Donnelly (edited 08-22-2000). ]
The Bosch 275 injectors are available from an injection shop in Portland for $288 a set. I am sure you can get them from other places... Vaughn Mackenzie has the phone number/address. It takes almost two hours to install them, counting some BSing. Email Vaughn for the info or search the archives... I believe he has posted it several times.
Tlippy... the weekend of the 23-24th may work... let me know if you are sure.
Tlippy... the weekend of the 23-24th may work... let me know if you are sure.
I have yet to see any hp mod I have done to this truck do anything but increase mileage (once you break in the play factor and start driving reasonably).
DDI's for me and the mileage got better. No hard data but I did 6500 miles this summer on vacation and did 18. 5 (by the odometer and gas pump) with my foot in it, the PE on most of the time and a cap on the bed.
Is it cost justified, not for me to say.
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Green Monster has the HOT EDGE on those PSD's
Green Monster's cyber garage (& multimedia sandbox)
Yahoo messenger: davidc3y
DDI's for me and the mileage got better. No hard data but I did 6500 miles this summer on vacation and did 18. 5 (by the odometer and gas pump) with my foot in it, the PE on most of the time and a cap on the bed.
Is it cost justified, not for me to say.
------------------
Green Monster has the HOT EDGE on those PSD's
Green Monster's cyber garage (& multimedia sandbox)
Yahoo messenger: davidc3y
Last edited by a moderator:
Reasonably driven: 275's added and lost . 5mpg in town and 1. 2mpg towing. Power increase was nice but at a price.
Tlippy - $288 over the counter for Bosch injectors from Portland, OR. - Email if you want the name of the shop. Took me 2. 5 hours and I was not in a hurry.
Forgot the hard data - Reno trip from Oregon City, OR to Reno, NV with TT (4,500#) Total miles 1,233. 8. Mileage with a calculator = 12. 58, 13. 75, 14. 01, 14. 36. Route was over Willamette Pass, through Kfalls, into Susanville to Reno but came back via Hwy 97 to 26 and over Mt Hood. Speed was between 60 & 65.
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4-sale with less than 18,000 miles. '99, 3/4, QC, SLT, 4x4, ISB, 5sp, 3. 5xlsd, tow pac, HD tcase, tow mirrors, camper pac, White over driftwood, Mist gray interior.
[This message has been edited by BV (edited 08-23-2000). ]
Tlippy - $288 over the counter for Bosch injectors from Portland, OR. - Email if you want the name of the shop. Took me 2. 5 hours and I was not in a hurry.
Forgot the hard data - Reno trip from Oregon City, OR to Reno, NV with TT (4,500#) Total miles 1,233. 8. Mileage with a calculator = 12. 58, 13. 75, 14. 01, 14. 36. Route was over Willamette Pass, through Kfalls, into Susanville to Reno but came back via Hwy 97 to 26 and over Mt Hood. Speed was between 60 & 65.
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4-sale with less than 18,000 miles. '99, 3/4, QC, SLT, 4x4, ISB, 5sp, 3. 5xlsd, tow pac, HD tcase, tow mirrors, camper pac, White over driftwood, Mist gray interior.
[This message has been edited by BV (edited 08-23-2000). ]
The shop in Portland (J&J Injection) has them for a little higher than I remember it being ($290 a set). I also found a place in Montana (Original Equipment, Inc. ) selling them for $45 apiece ($270 a set). No tax at either place, just a little shipping. Website for OEI (also have stores in the Dakotas, Wyoming, & Minnesota) : http://www.original-equipment.com/
The "group purchase" deal, on the Products forum, is slightly less than from OEI, however there is a $30 core charge on top of that, since they want your old injectors. With the cost of shipping your old ones back, it'll cost more than the ones from OEI unless they pay shipping. You do get NEW injectors, the old ones they want for testing (?)(?).
Vaughn
The "group purchase" deal, on the Products forum, is slightly less than from OEI, however there is a $30 core charge on top of that, since they want your old injectors. With the cost of shipping your old ones back, it'll cost more than the ones from OEI unless they pay shipping. You do get NEW injectors, the old ones they want for testing (?)(?).
Vaughn
My 98. 5 2500 4x4 3. 54 5 spd is basically stock engine wise except for the RV injectors I installed over a year ago.
I'd say that I get better mileage than the stock injectors, but couldn't put an exact number to it. I went to bigger tires about the same time I added the injectors, so the mileage really didn't change.
This summer I went back to running the stock 245r75 tires for a few months, and got 21. 5 mpg on a trip over to Bend OR and back. Usually with the 285r74 AT KO's I get a solid 19 mpg with mixed driving.
I'd say that I get better mileage than the stock injectors, but couldn't put an exact number to it. I went to bigger tires about the same time I added the injectors, so the mileage really didn't change.
This summer I went back to running the stock 245r75 tires for a few months, and got 21. 5 mpg on a trip over to Bend OR and back. Usually with the 285r74 AT KO's I get a solid 19 mpg with mixed driving.
Joseph, do you think the 275's along with the VA would give me an increase in milage? I have the VA, which gives me 3 mpg better unloaded at about 65 mph. Pulling my 22' TT I went from 14 mpg to 16 mpg at 65 mph when I added the VA. I am intersted in what adding 275's will do to my milage. The extra power would be nice, but not needed.
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Randy Richmond, 98. 5 24 valve, 2500, 5 speed, 4x4, 3. 54, LB, QC, Van Aaken CPC, PacBrake, Walker flowthru muffler, Amsoil, running boards, Leer Shell, Metalic Red.
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Randy Richmond, 98. 5 24 valve, 2500, 5 speed, 4x4, 3. 54, LB, QC, Van Aaken CPC, PacBrake, Walker flowthru muffler, Amsoil, running boards, Leer Shell, Metalic Red.
Maybe I'm the odd man out but my milage went down when I changed injectors. I installed stage II M's and lost 2mpg from what I was getting calculating by hand. However my computer which used to be close to my calculations now reads 3mpg higher than what I'm actually getting. On the surface looking at the computer alone it would look like a 1 mpg gain.
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Jim
Patriot blue Y2k 5sp Stealth 2500 (markings removed)QC,SLT+,leather, camper,TT,lsd,3. 54,4x4,hd xfer case,Geno's dual gauge,DD IIM's and boost module,K&N stock filter, Tekonsha Sentinal,Reese 12 hole wd hitch, ARE lid & bedrug liner, Sony 10 disk cd changer.
[This message has been edited by jims (edited 08-24-2000). ]
------------------
Jim
Patriot blue Y2k 5sp Stealth 2500 (markings removed)QC,SLT+,leather, camper,TT,lsd,3. 54,4x4,hd xfer case,Geno's dual gauge,DD IIM's and boost module,K&N stock filter, Tekonsha Sentinal,Reese 12 hole wd hitch, ARE lid & bedrug liner, Sony 10 disk cd changer.
[This message has been edited by jims (edited 08-24-2000). ]
Injectors should do some good for mpg if they atomize the fuel well and have the right spray pattern. Driver habits are still very important. The boxes (and injectors) seem to give mpg that isn't real if you are using the truck's mpg gauge, because it calculates fuel deivery from the ecm. The ecm "doesn't know" about the extra fuel you gave it with your mods. Mark Chapple and I had a grin watching the mpg LED go all the way up to 30 on his 99 because the box was fooling it [last year at the Nationals]. BTW, my article in #29 has a typo made after I submitted it, and the numbers don't work for the mpg calculation I made in the beginning of it. You get the point, though, that mpg is best calculated over extended time and multiple fillups.
Some of you guys are not calculating the payback cost correctly. Under my circumstances, this would be the payback for the $288 injectors.
Stock gets measured 21 mpg @ 70 mph, unloaded.
If the 275 injectors added 1 mpg, it would take 88,700 miles to pay back.
Here's the math:
(Before the injectors) 88,700 miles / 21 m. p. g. = 4224 gallons. At $1. 50 gallon, the 4224 gal. costs = $6,335. 71
(After the injectors) 88,700 miles / 22 m. p. g. = 4032 gallons. At $1. 50 gallon, the 4032 gal. costs = $6,047. 73 + $288. 00 (for the injectors) = $6335. 73
Only variances I can think of for each individual out there is the cost of fuel and how much you actually pay for the injectors. As the cost of injectors and/or fuel increases the miles to break even grows quickly. Takes a while to pay it back though.
One last thing, I personally doubt the injectors give you any mpg gain, regardless of what any sales literature says. Doing hard numbers and driving long distances under close to the same driving conditions is very difficult, but would be the only way to know for sure. I do though, consistently run over the same long distance unloaded, so I have a good baseline. If whoever sold the injectors wanted to give me a set for long enough to do some testing (then I'd give them back), I would create a "real" baseline to determine the difference in mpg.
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Y2K 2500 Cummins ETC/DEE, SLT+, 4X4, Quad, LB, Intense Blue Sport, 3. 54 anti-spin, rear aux. springs (camper special), sliding rear window, all options except cab clearance lights including agate leather, totally stock, + a mpg increaser goodie. Since everybody else listed their toys, I will too.
1995 Kawasaki ZX6-R (For Sale)
1990 Toyota Celica
1983 Mazda RX-7 GSL (For sale)
1983 Mazda RX-7 GS (For sale)
Stock gets measured 21 mpg @ 70 mph, unloaded.
If the 275 injectors added 1 mpg, it would take 88,700 miles to pay back.
Here's the math:
(Before the injectors) 88,700 miles / 21 m. p. g. = 4224 gallons. At $1. 50 gallon, the 4224 gal. costs = $6,335. 71
(After the injectors) 88,700 miles / 22 m. p. g. = 4032 gallons. At $1. 50 gallon, the 4032 gal. costs = $6,047. 73 + $288. 00 (for the injectors) = $6335. 73
Only variances I can think of for each individual out there is the cost of fuel and how much you actually pay for the injectors. As the cost of injectors and/or fuel increases the miles to break even grows quickly. Takes a while to pay it back though.
One last thing, I personally doubt the injectors give you any mpg gain, regardless of what any sales literature says. Doing hard numbers and driving long distances under close to the same driving conditions is very difficult, but would be the only way to know for sure. I do though, consistently run over the same long distance unloaded, so I have a good baseline. If whoever sold the injectors wanted to give me a set for long enough to do some testing (then I'd give them back), I would create a "real" baseline to determine the difference in mpg.
------------------
Y2K 2500 Cummins ETC/DEE, SLT+, 4X4, Quad, LB, Intense Blue Sport, 3. 54 anti-spin, rear aux. springs (camper special), sliding rear window, all options except cab clearance lights including agate leather, totally stock, + a mpg increaser goodie. Since everybody else listed their toys, I will too.
1995 Kawasaki ZX6-R (For Sale)
1990 Toyota Celica
1983 Mazda RX-7 GSL (For sale)
1983 Mazda RX-7 GS (For sale)
tlippy,
<font size=+2> <font color=#90000> Power!! <font size=0>
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<font color=#990000>~<font color=#990000> '99 2500 SLT <font color=#990000> ~ QC ~ 4X4 ~ LB ~ Auto ~ 4:10 LSD ~
<font color=#000000>*<font color=#990000> BD E-brake<font color=#000000> *<font color=#990000> BD Autolock<font color=#00000> *<font color=#990000> Gear Vendor OD<font color=#000000> *<font color=#990000> Jordan Research T-brake <font color=#000000> *<font color=#990000> Bullhide spray-in Liner<font color=#000000> *
<font size=-2>... Lookin' for the 'RE' to go next to my 'TIRED' so's I got more time to Play!... <font size=-1>
[This message has been edited by Rattlin (edited 08-25-2000). ]
<font size=+2> <font color=#90000> Power!! <font size=0>
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<font color=#990000>~<font color=#990000> '99 2500 SLT <font color=#990000> ~ QC ~ 4X4 ~ LB ~ Auto ~ 4:10 LSD ~
<font color=#000000>*<font color=#990000> BD E-brake<font color=#000000> *<font color=#990000> BD Autolock<font color=#00000> *<font color=#990000> Gear Vendor OD<font color=#000000> *<font color=#990000> Jordan Research T-brake <font color=#000000> *<font color=#990000> Bullhide spray-in Liner<font color=#000000> *
<font size=-2>... Lookin' for the 'RE' to go next to my 'TIRED' so's I got more time to Play!... <font size=-1>
[This message has been edited by Rattlin (edited 08-25-2000). ]
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