Are 26lb injectors to much? Is it possible to have to much ?

[SLOWBRAEATER]

Most of you know my mods, most boltons/ powerpack/cam etc. etc. i have 26lb ls1 injectors and the walbro in tank pump, are these injectors to much?is it possible they would slow me down at all from being to much? thanks for any help guys.

[viper98885]

That will definitely be too much for a V6. You will want to go with an injector under 24 lbs or lower if you are not going with forced induction or nitrous.

[SLOWBRAEATER]

well john d said that if my pcm is programmed for them they wont slow me down or hurt performance

[viper98885]

That's a lot of fuel to be dumping into a NA V6. Custom computer programming will be a must with injectors that size.

[viper98885]

You would be more than fine with smaller injectors.

[SLOWBRAEATER]

viper you have mail please respond

[hockeyman]

Wht is stock in our 3.8's, and how small can we go?

-Marc

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by hockeyman:
Wht is stock in our 3.8's, and how small can we go?

-Marc<hr></blockquote>


19 lbs, should be 21 lbs.

From a link in the Engine Tech Database:

http://www.rceng.com/technical.htm

[hockeyman]

<blockquote>quote:</font><hr>Originally posted by FirebirdGT:



19 lbs, should be 21 lbs.

From a link in the Engine Tech Database:

http://www.rceng.com/technical.htm<hr></blockquote>

Thank You!

-Marc

[speedy-v6-camaro]

The worst that would happen with larger injectors is a rough idle. But unless you have large amounts of HP you won't need more than 24lb injectors.

[John_D.]

<blockquote>quote:</font><hr>Originally posted by speedy-v6-camaro:
The worst that would happen with larger injectors is a rough idle. But unless you have large amounts of HP you won't need more than 24lb injectors.<hr></blockquote>

The other consideration is the range of adjustment that the pcm can handle. I've heard it's around 25%. My fuel trim runs about 20% with the 24 lb injectors. (if I don't tweak the base setting on my maft, which is another whole discussion in itself...) So 26 lb and up injectors could exceed the pcm's adaptive capabilities.

If you exceed the range, then you'll run rich all the time, not just at idle, which will be bad for power, mileage, and durability.

[SLOWBRAEATER]

now if i get my pcm programmed for the 26lbers i shouldnt run rich correct?

[John_D.]

<blockquote>quote:</font><hr>Originally posted by SLOWBRAEATER:
now if i get my pcm programmed for the 26lbers i shouldnt run rich correct?<hr></blockquote>

Yep, you should be ok, if they remap the fuel table, then the pcm will be dead on. Then it won't be having to try to adapt to an injector it's not programmed for.

[Zooomer]

With a mini-AFC or a PCM recal you can run any size injectors you want and be ok.

[SLOWBRAEATER]

thanks zooomer and everyone else [img]graemlins/thumbsup.gif[/img]