Bosch pumps and LH ...

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Bosch pumps and LH ... Posted by Kevin K [Email]

(#374) [Profile/Gallery] (more from Kevin K) on Sun, 13 Jan 2002 18:36:06

In Reply to: Okay with all due respect, Jay Hassinger, Sun, 13 Jan 2002 08:33:38 Members do not see ads below this line. - Help Keep This Site Online - Signup

Bosch pumps usually flow well at high pressure. A few guys that experienced top end lean out on dyno reported NO pressure drop, when I asked.

exact LH(usa) funtion is not well known (I know my cis quite well). generalizations about fuel pump pressure help little, but some time measuring inj'r duty cycle, amm voltage output, while boost is modulated at wot, would be very helpfull. It is documented vaguely that the LH(usa) defaults to a crude speed density system at the top end of power range, with density based on oem boost levels tapering off with rpm. This speed-density transition is consistent with the limited accurate range of hot wire amm's.

Brad gets 30# to work, as he said, with a big R on the amm output to drop the signal across it's active range, I suspect the trim screw is just 'zero' offset, that influences idle/low power only.

No one has shown a flat wide band o2 output on a dyno run with 30# inj'r's and LH(usa) to date. IMHO, a programmable added inj'r would do it. The driver, in theory could also be set up in parallel with LH to control big inj's at oem holes, and go beyond the rev limit.

posted by 67.208.17...

Posts in this Thread:

30 lb Fuel Injector Question, EJ, Sat, 12 Jan 2002 02:21:44
- What I did, mathiasB, Sun, 13 Jan 2002 05:47:14
- Re: 30 lb Fuel Injector Question, Brad, Sat, 12 Jan 2002 10:23:00
  - Some real balance.., SteveW, Sat, 12 Jan 2002 11:34:56
    - Re: Some real balance.., Justin VanAbrahams , Sun, 13 Jan 2002 00:32:24
      - Re: Some real balance.., EJ, Sun, 13 Jan 2002 01:56:36
        Here..., Justin VanAbrahams , Sun, 13 Jan 2002 10:29:22
- Get the fueling corrected..., Keith S, Sat, 12 Jan 2002 08:59:09
  - To bring some balance to your statement, Jay Hassinger, Sat, 12 Jan 2002 09:39:37
    - adverse effects of 85-90psi line pressure is that, steveC in BC, Sat, 12 Jan 2002 13:35:42
      - thanks,, dave n, Sat, 12 Jan 2002 20:58:54
        Yep, Jay Hassinger, Sun, 13 Jan 2002 08:39:07
        Re: Got one a few months ago..., Cliff, Sat, 12 Jan 2002 23:51:22
    - Totally disagree Jay...., GreggC, Sat, 12 Jan 2002 10:37:15
      - Well in that case, Jay Hassinger, Sat, 12 Jan 2002 15:05:23
        Your a big FAN of rrfpr......., GreggC, Sat, 12 Jan 2002 18:51:17
        Okay with all due respect, Jay Hassinger, Sun, 13 Jan 2002 08:33:38
        Something to think about....., GreggC, Sun, 13 Jan 2002 22:53:34
        Bosch pumps and LH ..., Kevin K , Sun, 13 Jan 2002 18:36:06 <-- Viewing This Message
        Bosch pumps and LH+5Th inj+rail knock, SteveW, Sun, 13 Jan 2002 21:58:44
        Re: Okay with all due respect, Justin VanAbrahams , Sun, 13 Jan 2002 10:40:47
        I'd like to rephrase that question..., Eric van Spelde, Sun, 13 Jan 2002 09:34:12
        what is the solution?, dave n, Sat, 12 Jan 2002 20:57:23
        Re: what is the solution?, Jay Hassingerq, Sun, 13 Jan 2002 08:36:56
        Re: what is the solution?, chrisx, Sat, 12 Jan 2002 21:27:56
        oh no..fanning fires.....n/m, chrisx, Sat, 12 Jan 2002 20:50:38
    - AMM calibration, Keith S, Sat, 12 Jan 2002 10:27:25

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