har lige kikket foregående side igennem og han har droppet projektet med det siamesed 2 port topstykke og istedet valgt dette 8 port topstykke
http://business.fortunecity.com/lerner/445/head.htm
........First off let me say that the DTA ECU is fantastic. It’s easy to use, does just what it is designed to and does it very well. If you are planning on injecting an engine other than one with a siamese port head, I would strongly recommend a DTA. If you are expecting plug-and-play you’ll be disappointed but perseverance will pay off. On the downside, their manual and help files are written by a techie who assumes you know how everything is supposed to work so if you have a problem it’s entirely up to you to figure it out. The Email support I got from DTA in England wasn’t terrific, OK if truth be told, it was always curt, not very helpful and occasionally rude. Which is better than the response I got from their Canadian agent who seemed completely disinterested in dealing with customers. That is, when he bothered to answer the phone at all.
DTA market their system as being applicable to BMC A series engines. They took an extremely simplistic approach to the problems presented by the siamese port head, stating that all that’s required is "run it in 2-stroke mode and Bob’s yer uncle". If the siamese cylinder cycles were 360 crank degrees apart that would work just fine, but, unfortunately for us, they are only 180 degrees apart and draw through the port asymmetrically. DTA have never set up an A series engine and do not know anyone who has, so claiming it would work was a bit of a stretch. Between April and June 2002 I spent an unreasonable amount of time conducting tests to search out the operating envelope for this engine, continually updating DTA on my progress. Unfortunately they didn’t take too much of an interest in my work and offered few suggestions on how to resolve problems. It was clear that they did not understand the problem, or just didn’t care enough to think about the data I was sending them. Pitty.
Without fundamental changes to the DTA ECU it will not work for siamese port engines. Since DTA were unwilling to make the modifications I suggested, they offered to take their system back for a full refund.
