I just received my injectors from cleaning. The bike is a 1991 Ducati 851 with IW031 injectors. Same injectros as a lot of Moto Guppis are using.

Check out the flow before and after and it might give you some thing to think about if you are going to start mapping from scratch.

Clean before mapping!!!!!!!!!!!!!!

http://virdung.net/injectortune.jpg

Jocke.........

Hi Jocke,

A really good heads up - built in error of round 5%.

I assume these injectors have never been cleaned or replaced.  If so it's good to know that they can be bought back to good order by cleaning after 18 years. :)

Good report!

Glad I did mine before starting w MyECU.

Am I just cynical or is it not a tad suspicious that both injectors are reported as exactly the nominal value after cleaning? Anyway, it makes me wanna send mine away and have a deadtime table made while at it.

raz wrote on 12/01/09 at 02:41:11:

Am I just cynical or is it not a tad suspicious that both injectors are reported as exactly the nominal value after cleaning? Anyway, it makes me wanna send mine away and have a deadtime table made while at it.

Yes it looks a bit to good but I think that the values might be correct. The static flow of an injector is a very good way of checking if an injector is clean. All injectors have a very simular flow rate when they are new or clean. Tested staticly that is. Normaly within 1% or better so so I think that it could maybe be a correct value.

What it does not tell you is the values at "dynamic flow". Here is a very good article from Doug Lofgren that tells a lot why matching injectors are important.

http://www.visi.com/~moperfserv/Injectors.mht

Jocke..........