Aftermarket Fuel System Mismatch CDD and R&D

Hey IDI guys,

I wanted to discuss the merits and demerits of mismatching upgrade brands, particularly in the fuel system.

I was planning out upgrades for my project truck (haven't started a thread for it, but I will once the project actually gets going) and was wondering what you guys thoughts are on using a CDD pump (probably a 130cc, I'll run a turbo & etc.) and R&D stage 1 Injectors.

CDD pumps seem very well designed, but R&D doesn't have a core charge for injectors and they are cheaper to begin with. Lookin to get good reliable performance without spending unnecessary cash.

What do you guys think about running a CDD pump with R&D injectors?
Bad, Good, Maybe? Worth the extra $1000 to match pump and injectors?
(CDD pumps are $800 less than the R&D at 130cc, with R&D injectors being $200 less than CDD)


Thanks and Happy Tinkering!
-CalIDI

Regardless of who makes em, when doing Power mods you want to consider pump cc and nozzle size, regardless of who builds them (when comparing static sizes/volumes)
I see no reason you can't mix and match, just remember, more fuel will be more smoke. Have a forced air induction that will compensate.

Stickies

Edit to add
The link I was referring to is gone...
"Oh wherefore artThou Mel"

Nero said:

Regardless of who makes em, when doing Power mods you want to consider pump cc and nozzle size, regardless of who builds them (when comparing static sizes/volumes)
I see no reason you can't mix and match, just remember, more fuel will be more smoke. Have a forced air induction that will compensate.

Click to expand...

Yep, Im in Cali, so definitely gonna run a turbo and maybe aneroid...
Ive got an ats 88 but no downpipe and the turbo needs a rebuild. Probably gonna sell it and buy a CDD or R&D kit.

Clb said:

Stickies

Click to expand...

I didn't see anything regarding this topic in the stickies. Ive read most if not all of the tech articles... If there is one I missed I'd like to see it.

Anyone else wanna chime in about mismatching brands of aftermarket parts on an IDI?

Thanks and Happy Tinkering!
-CalIDI

I wouldn't worry too much about mixing injectors and pumps as long as they're both from a reputable source, that's the most important thing is buying good parts in the first place.

Fwiw
Matched pop pressures are more important, only caveat would be something like mels injection systems like the bigbore misters for the big pumps.
Jason has something like that...These I'd use as a matched set.
With a big pumps calibration voodoo the output capabilities of the injectors are more important...
Edited my post above

Clb said:

Matched pop pressures are more important, only caveat would be something like mels injection systems like the bigbore misters for the big pumps.
Jason has something like that...These I'd use as a matched set.
With a big pumps calibration voodoo the output capabilities of the injectors are more important...
Edited my post above

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Definitely.

Looks like I'll probably try stage 1 R&D injectors and a CDD pump if I manage to scrape together enough cash for it...


Thanks for the replies, I know fuel systems have been done to death, but hadn't seen anything like this.

Any other thoughts are always welcome!

Happy Tinkering!
-CalIDI

R&D pumps and injectors are far and away superior throughout.
Also No matter what, the injector will only put out what the pump gives it.
Keep in mind R&D pumps actually produce as advertised.

typ4 said:

R&D pumps and injectors are far and away superior throughout.
Also No matter what, the injector will only put out what the pump gives it.
Keep in mind R&D pumps actually produce as advertised.

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What makes R&D pumps and injectors far and away superior?

Im curious about this as well

Has my interest as well.

Have my ax, and my bow

Justin designed an produced the high output pumps that we have available today.
The others are subpar copies.
I was referencing his stage ones.
Against other so-called stage ones also a subpar copy.
As far as stock injectors our products are equal except I have used bodies and he has new.
If I went into accurate detail on the pumps I would probably get banned from this forum.

typ4 said:

Justin designed an produced the high output pumps that we have available today.
The others are subpar copies.
I was referencing his stage ones.
Against other so-called stage ones also a subpar copy.
As far as stock injectors our products are equal except I have used bodies and he has new.
If I went into accurate detail on the pumps I would probably get banned from this forum.

Click to expand...

Why? So long as it's objective and factual, and not opinion, I don't see how they could get upset. Keep it clean and insult free, and I don't imagine you'll have an issue.