3800 42.5lb injectors.

[jk99gtp]

I ordered some of these, and hopefully will get them in this week so I can install them.

My question is: When using the ICCU, what is a good starting point on the ICCU A/F wise? What should I monitor on the scantool? L-Trims?

I will probably just get them programmed into my PCM in the future, since I need to schedule a time with DHP to get my ICCU timing portion added in also. Hopefully I will be able to do this sometime soon...

Thanks guys.

Click to read more...

 

[jk99gtp]

Another thing also, for owners who have PRJ fuel rails. Stupid question actually...

How do you bleed the fuel pressure with these rails? Last time I checked I didnt see anywhere to release the fuel pressure...

Thanks!

 

[superchargedgp]

Originally posted by jk99gtp@Nov 8 2004, 05:58 AM
Another thing also, for owners who have PRJ fuel rails. Stupid question actually...

How do you bleed the fuel pressure with these rails? Last time I checked I didnt see anywhere to release the fuel pressure...

Thanks!

[snapback]59504[/snapback]​

just unscrew and let the fuel pour

 

[J.E.T.]

My question is: When using the ICCU, what is a good starting point on the ICCU A/F wise? What should I monitor on the scantool? L-Trims?

I had the same question in my mind with the ICCU. I just ended up setting everyting to 100% and 0 timing advance. From there, I tuned according to uinstructions I gathered scattered around the board/web.
- Set parking brake and put in gear. Adjust IDLE to 0 LTFT.
- Drive and set cruise to 55. Adjust to cruise for 0 LTFT.
- Go WOT and monitor O2's. ADjust WOT until desired 02 numbers are achieved.

I've been monitoring my ICCU like a hawk lately. I dont like the fact that it just dumps +11 degree timing advance for no reason. Not sure if it's a problem with just my unit, or if its common. No one here or the national board seems to be responding to my weak voiced post.

J.E.T.

 

[imported_Ron Vogel]

No one here or the national board seems to be responding to my weak voiced post.

J.E.T.

[snapback]59531[/snapback]​

[/quote]

TYPE IN CAPS; PEOPLE WILL THINK YOU ARE YELLING THEN!!!

Seriously, I would start looking for a loose connection at the IAT or ICCU that may be causing the timing advance. It wouldn't hurt to check the happy knob with a multitester to see if the steps are at the appropriate resistance.

 

[jk99gtp]

Thanks guys for the replies. Hopefully it wont be a pain to tune these injectors...

Jet once I get my DHP programmed so I can use the timing portion of the ICCU I'll let you know if I experience any of the problems you are having now. After reading those posts on ClubGP I definitely will be scanning more than usual, just to make sure everything is going well with the IAT being spoofed and timing during part throttle/WOT...