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How do you know when its time for bigger injectors?

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Old 05-06-2002, 11:40 PM
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Default How do you know when its time for bigger injectors?

I dont have A-tap. so when should I go to bigger injectors? Right now Im about 400 RWHP on
stock 2000 injectors.
Here is my list of mods if it helps.
LS6 intake
T1 cam
3:73's. with a 12 bolt on the way.
Grotts with O/R, prodyno cat back
ASP pullies
Lid, descreened Maf
Old 05-07-2002, 08:55 AM
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Default Re: How do you know when its time for bigger injectors?

you will have to get onto auto tap and check for the duty cycle to be over 100%
Old 05-08-2002, 05:36 PM
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Default Re: How do you know when its time for bigger injectors?

You and I are right at the same HP point and have the same size stock injectors. On some recent runs, I calculated my duty cycle and it was maxing at around 105% (I need bigger injectors) You want to shoot for a max DC of around 80-85%.

Don't have the formula here but search in the computer section. y2khawk posted the formula recently in a thread. You need to log your bank1 and bank2 base pulse width's and then convert them to duty cycle.

Since we're the same, I guessing you're in the same boat as me.

Mark
Old 05-09-2002, 11:49 PM
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Default Re: How do you know when its time for bigger injectors?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MechMan:
<strong>I dont have A-tap. so when should I go to bigger injectors? Right now Im about 400 RWHP on
stock 2000 injectors.
Here is my list of mods if it helps.
LS6 intake
T1 cam
3:73's. with a 12 bolt on the way.
Grotts with O/R, prodyno cat back
ASP pullies
Lid, descreened Maf</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I personally think that you're ok. My buddy had a similar setup and ran stock injectors and it was fine. Shoot, it was running too rich and it was fine...2000 injectors. I forget what the injector P/W was...I've heard that 20 is a little on the high side.

Brad




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