The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Dyno numbers 1800

posted by  iadr on  Thu Dec 18 15:47 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Wed Jan 1 18:39 CST 2014
[RELATED]

If I may...
I've already chatted briefly about this privately, and I offered this solution:

You need an RPM switch to have the D-jet step to a richer map.

Anything in the way of an adjustable shift light has the circuit; MSD make specific modules for this, also.

What you do is run a relay and a Pot. At ~4800 rpm, the circuit to the temp sensor is cut and replaced with one routed through a potentiometer. Pot is trimmed to make a reasonable step. This is like the IPd box, but only cuts in when you need it. The trick to making D-jet work, is to keep the vacuum to throttle opening to RPM map similar. No different than later domestic speed-density systems. With enough switches you could tailor a whole new map... which would be impractical, but basically, if it's close, this should be a solution.

Here is a graph I did of using two steps.

Non proportional, use at your own risk, etc, etc but it helps explain what I'm suggesting.







USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.