275 RV injectors

[MoparDave]

I am considering installing a set of Bosch 275 RV injectors. I’d like some input from members that are presently using them. I want to stay on the mild side so the 30 to 40 HP gains are all I am looking for. Other then that the engine is stock; I am not interested in a fueling box.



Thank you for the input,



MoparDave

 

[Lsfarm]

Why not?

Hello MoparDave. I would rethink your feelings about a fueling box. If you put in just the injectors, you won't be able to take full advantage of the extra fuel without adding a boost fooler and upping the turbo boost. The extra horsepower will be mostly in the mid and upper rpm ranges.



With the basic fueling boxes you get better fueling timing, which gives a huge increase in low and mid range torque and horsepower. This is where we feel the gains the most in day to day driving.



Most fueling boxes have a built-in boost fooler, and are a great value in HP per dollar. Plus you can just plug one in in about five minutes.



I feel that my EZ box gives me more power than the stage one injectors in my truck. I could live without the injectors, but not the EZ.



Just my opinions, and experiences. Greg L

 

[Boost]

275's without a boost module would give a very little gain IMO. I would add at least a boost module. This allows more boost to keep EGT's low and it also keeps the pump from defueling at 20lbs. I could feel a difference in top end power when I had stock injectors and just a EZ without the data port hooked up( just a boost module then) A boost module would be well worth the extra $150.

 

[juicedcummins]

I run the 275's or bd's rv's,from what i've seen they are very close if not the same. I like them but they are not as big a bang for your buck.

A fueling-box that has the boost-module is a better buy and alot easier to swap out for warranty work. These trucks lack a little in the timing and a box like the van-aken or equivillant would be a better way to go.

What was said above about the boost module is correct,you will need one even with 275's to get all you paid for.

By the time you factor in the labour to put in the injectors you would have a box. This would be pretty close if you count in the boost module.

If you are really stuck on injectors I'd try the bd 2's or equivalent the 275's seem to run hotter from what I read here.

 

[GRudy]

I too have to agree with all the above.

I started out with a VanAken box, Nice addition to power, especially at low end. (I like the VA because there is no tampering with the pump wire. ) Then this past Christmas I added the 275 injectors, an increase but not what I was expecting. I then bought the boost module & elbow and now she runs GREAT! By the way, I bought all my BOMBs used from fellow members. I only have $575. 00 invested in all.

 

[TREEMAN]

Dave ,

As the other guys said ,you will see little gain with just the 275,s . The EZ & the 275,s are a good combo for a mild but very noticeable upgrade ,especially towing,where my mpg improved from stock. The EZ is a 1minute add on or take off & well worth the money. Just my 2c worth.

Ian

 

[MoparDave]

No fueling box

sorry, but no fueling box for me. Just looking for input on the Injectors.

 

[bipit]

Dave,



I have 275 injectors, and a edge ez. I had to take the truck in for warranty work, so all the truck had were the injectors. The egt temps were very high with just the injectors, I would not run injectors by themselves especially if I was towing.

 

[Okie-Go]

I did the ez first and then the injectors. Lot's of difference. Then I decided I needed the gauges. I guess I did it backwards but now I have em. The ez and 275's are awesome for towing.

 

[Joseph Donnelly]

You don't need a boost module with the 275 injectors. They give 50 hp about 100 ft lb in automatics, 42 hp in ETH, 33 hp in 5 speed-equipped engines. They are a good choice for mild uprating.

 

[juicedcummins]

Originally posted by Joseph Donnelly

You don't need a boost module with the 275 injectors. They give 50 hp about 100 ft lb in automatics, 42 hp in ETH, 33 hp in 5 speed-equipped engines. They are a good choice for mild

uprating.

Thats funny my 99 set all kinds of overboost codes etc only after the injectors went in.

Not only that you could feel it de-fuel as it crossed 20lbs of boost. This one stock was 17lbs before injectors and after it was over 21.

I have a very early set of injectors and was on the phone right off the hop about the de-fueling. I ran them for a long time without a boost moduel with no probs but didn't get all the gain from the injectors until the boost mod went in.

Maybe the newer 24valves have a wider window before it de-fuels but I kinda doubt it. They just run higher boost right out of the box.

 

[GRudy]

Somebody correct me if I'm wrong but I don't see how only adding the injectors could raise boost. The injectors add fuel not air. The waste gate is still going to open at 20 lbs unless you add a restricted boost elbow to keep the wastegate from opening.

 

[ISB RAMBO]

Dave, not sure how to relate your ETC to my ETH, so take the following as general information. I have the 275's with the Practical Solutions boost module and am very happy with this setup. Power is great for what I was looking for and the stock clutch does not slip. On a trip out west last summer, I pulled a 10,000# travel trailer up a 6% grade at 70MPH in 5'th gear. EGT, after turbo, never got above 750 with the max. boost being 32#. Without the boost module you will get increased power at low rpm's but not much in mid-range and above. It's tough to tell about mileage, but there was an increase - seems like 1 to 1. 5mpg more. Going for more than this power increase costs big bucks and may mess up a warranty problem.

Stan

 

[pnwradar]

Re: No fueling box

Originally posted by MoparDave

sorry, but no fueling box for me. Just looking for input on the Injectors.

Don't confuse the Edge EZ and VA boxes with the "major fueling" boxes.



The EZ plugs into an engine test port and modifies engine timing, giving you better efficiency and a little more power. It also connects to the MAP sensor, allowing you to exceed 20# boost -- probably won't go higher than 25-27# with 275 injectors, but more boost equals more HP. Note that this "boost module" feature won't actually give you more boost, but it will prevent the computer from cutting back the fuel when you exceed 20# boost. In order to get more boost, you'll need to modify the wastegate dump on the turbo -- might involve putting a clamp on the hose, replacing a brass fitting, or shoving a spent . 22 shell into the dump line. Also note that both these connections are easy to remove, and leave no trace when removed.



The "major fueling" boxes, like the Edge Comp and TST PM3, actually connect into the injection pump wire. They force the pump to add fuel outside the normal rate, overfueling the engine and giving you a pile more power. Besides leaving physical evidence on the pump wire, they also leave evidence of overfueling in the computer. These boxes will also take you into dangerous territory (high EGTs, broken injector pump, burnt clutch, voided warranty).



IMO, the 275 and EZ combo is the best "sane" BOMB for your truck. Doesn't raise the EGTs to the roof, and won't break stuff. Only downside: it's the first step down a slippery slope.



-jon-

 

[TxDieselKid]

NO!.......it's better then that.......NO!

Originally posted by MoparDave

sorry, but no fueling box for me. Just looking for input on the Injectors.

Just a question, why?



Andrew

 

[Ramafid]

The 275's and a small fueling box are the way to go for a decent power upgrade. I dropped almost 2 seconds in the quarter with this setup. I'm sure the DTT products helped also but you should still see at least a 1. 5 second improvement in the quarter mile which is a big difference compared to stock. I had the box first and then added injectors so I can't tell you how good just the injectors would have been. Both are great

 

[Barry]

I added my stage 1 injectors and disconnected my EZ and went for a ride to get an idea what "just" injectors would do. I could only tell a slight increase in power. I told myself, "this is not worth $500. I pulled over to the side of the road and hooked up my EZ... ... ... . WHOA BABY! My truck took off like a bat out of a burning stump! I then installed the boost elbow and picked up another 7# of boost. Powers great. Fuel mileage is good and EGT's are low. Given a single shot choice between the EZ and injectors... ... ... ... ..... EZ! Hope all this excellant info sticks to someone out there.

 

[MoparDave]

TxDieselKid

TXDieselKid, I had the EZ fueling box for about 3 months but i never liked the way the VP44 sounded when it was installed. Injection pump made a loud knocking sound. Worked good but the sound just did not seem right to me.

 

[LSMITH]

Dave I feel the same way about the EZ. The VA in my experience makes the engine much quieter and no injection pump noise. The Diesel Dynamics version of the EZ has less aggressive timing setting from what I have read, my guess would be that it would not make the engine louder and the pump noise would not show its head.



That said I do not know of a single EZ related problem. I think I am just sensitive to noise changes. The EZ is a great box and does what Edge says it will, dollar for dollar the EZ is KING!

 

[Fuzz]

FWIW

At May Madness last May,I asked Chip of Blue Chip,what he would

recommend to increase the horsepower some,and not lose any

dependability. He replied,without a doubt injectors... He thought the bullydog 2's. (Think he handles them. )

That said... ...

I have 275's and an EZ. . The 275's helped some,not a lot. Added the EZ and helped a little more. Have to watch the EGT's when pulling(Max GCVWR+). I kinda wish I had went with some 2's,Bullydog,DD or some. I didn't and the truck pulls OK. It was very disappointing to me in Stock configuration.

BTW,I got about 1. 5 more MPG with the 275's pulling. With both

275's and EZ about the same as near as I can tell. Too many variables. . hills,wind, traffic. I'm happy with mileage. Might put on a

Rhino muffler,see it helps the EGT's.

Fuzz