Hey guys,wondering if I've done something wrong,I put some DDP +75 hp injectors in my truck,the things don't pull as well as the RV275s that were in there,and fuel mileage is about the same,they run good but I was expecting more power/better economy,any chance I've messed up somewhere?
I've tried a boost fooler and stuff,but nothing makes a difference.

The idle is good,the power is good too,egts are fine,30psi is the best I get,got 32 out of the 275s.
Anyone got the magic bullet?

 

I have the rv275 and edge comp, usualy drive with edge off.

Pulling a loaded trailor ( total ) 7 - 8000 lbs, edge on 1 - 1 .

 

The Bosch RV275's are a very high quality injector! I feel pretty confident saying more time and money was spent developing them than any aftermarket stick! With that said, Your probably about equal, honestly I would also think the DDP sticks would give you a little more fuel!

Sounds like your setup pretty well, What boost numbers are you seeing now?

 

Even though the 275s are only rated at like 40hp most of them gain about 60-65 on the dyno runs I've seen after install. Both injectors are about equal and both top quality injectors. Also remember that every truck acts different with different mods and types of injectors.

 

Well guys I put the 275s back in there,and it seems to be happier.
30psi seem about the best it will do for now,I think maybe I need a new air filter.

 

If your air filter is dirty that could be the problem with the ddp injectors, more fuel but not enough air. Did you see a rise in egt's with the ddp's.

 

Would have also seen some excessive smoke with this problem also.

 

Not saying this is whats happened but there are a lot of crooks out there that sale CHEAP injectors and claim them to be a high $$$ injectors.

 

No sir,got these from DDP directly,before I saw you had em' cheaper.

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Negative rise in EGT,the EGT's were about the same,never got over 1100 (pre turbo)
The DDPs did make a little more smoke,and when I pulled them out I noticed that one of the bodies was a different brand than the others...not sure that was good.(the minder in not pulled down much,if dirty it's only a bit)