Thinking About Un-Injecting

[skip]

I'm thinking about taking the SPI injection off of our Mini and replacing with the kit that MiniMania has for that pourpose.

http://www.minimania.com/web/Item/MM.../InvDetail.cfm

Anybody performed this swap? It looks pretty straight forward, our Mini was bodged together when we got it so I don't really feel too bad about making changes to it.

From day one it has always ran super rich, anyone who has ever followed me can attest to that. Other that the rich condition it runs great I have no complaints it is smooth like one would expect and injected engine to run.

There are just no adjustments, swapping opens the door to a hotter cam which would go better with the Swiftune mod'ed head and hopefully more HP

Let me know what you think.

[Mark]

From what I've heard, it is better off to know the extent of the rich running problem before de - injecting it. There are several "check out my injection's sensors" maps I've heard referred to on MM.

I wouldn't personally remove the injection until you are certain that it is unsave-able. Just my opinion, though.

Best of luck, and,
Best regards,
MSH

[James T]

I'm afraid I have to agree with Mark. Unless you really don't like the injection. The conversion is not very hard. The MM price seems a bit high. I'de shop around.

[skip]

I agree with both so far.
Mark I am thinking that when GoMini bodged the car together that they left off the oxygen sensor which by itself would make the car run very rich. I cannot find the wire either. There are a couple wiring issues with the dreaded box, I am not exactly sure what the "sorta reputable at that point Bobby Pack" and crew did to put the motor in and bypass the immobilizer. None of the issues make the car undriveable or undependable. I have always figured that if I were to deject the car that in the process I will also replace the front wiring harness.
You just have to understand that I am a bit of a perfectionist, if there is something not right then I absolutely must worry about it!!
Not to mention the loss of points that Jeff and I had to endure at the Mini Meet in Victoria for missing a carburetor!!! Ask Jeff it was a hoot, they were pulling our leg and I somehow got just a little spun up over it!!!

James, Yes the carb kit is very much overpriced, MiniMania sells the relay by itself. Both Heritage Garage and Seven Enterprises offer the carb kit cheaper and I am sure that the distributor could be sourced for less as well. I've also seen this kit in the $8-900 range as well.

Then there is the third issue, when I eventually go to sell this car I cannot in good conscience pass this along to another "sucker". Had I have known what I know now, I would not be having this conversion conversation, I'd be driving a Mark III or earlier.

Don't get me wrong I absolutely love this car, it makes me grin from ear to ear, it gets lots of compliments every time I drive it. The chicks dig it!! (Well they look like they are still in high school though, Robin loves to kid me about that!!)

[timc]

This link has many helpful links to SPI troubleshooting, and this forum is full of injection experts that know the SPI very very well and may help you diagnose the problems you are having.

http://www.theminiforum.co.uk/forums...howtopic=20533


this link is the general forum for all injection mini's

http://www.theminiforum.co.uk/forums...?showforum=140


hope this helps!

[timc]

Also check out this thread: it talks about the CTS sensor, and it may be the culprit. This or the Lambda.

http://www.theminiforum.co.uk/forums...=77637&hl=rich


email me and i can send you a ton of documentation on SPI and the mems computer as well as diagrams and the like. Maybe you will find some of it useful.

[timc]

http://www.rovermini.netfirms.com/parts.htm

here is a list of SPI/MPI parts and their part #'s and cross reference, maybe this will help find what you need. The CTS sensor is used in a TON of rover vehicles.

Check the connection to the CTS sensor first, and make sure there is no corrosion. Sensor runs at 5v. Resistance on this sensor should read differently from a cold start and fully warmed up. If its the same, between cold and warm, the sensor is crapped out. If you remove it, coolant will spill out. so prepare. I've never had to replace one, so i'm no expert, just did a little research on the subject.

two places to buy

http://www.lrseries.com/shop/product...ANSMITTER.html

http://www.minisport.com/acatalog/info_ADU7161.html

[timc]

Another thing to check out is a air leak in the manifold before the lambda sensor, as it talks about this is one of those threads. The manifold gasket may have a split in it or something. Either way, if its been running rich for quite sometime then you may end up having to have to replace your lambda sensor since it will be black and sooty and fizzled out so to speak.

[Mark]

Excellent Data, Tim!! Hey, what Tim said!! I'll second that!

Best of luck, and,
Best regards,
MSH