Hello-

I am thinking about installing the screamin' demon and upgraded wires. What is the advantage of this? I assume that I would need to upgrade the spark plugs as well... possible the NGK plugs? Any thoughts on this. I tried doing a search, but I came up empty for any current info. What do you all think? I would love some feedback before I purchase this stuff. Thanks.

 

Your MINI already has NGK plugs, at least mine did when I installed the new Denso Iridium plugs. Afer the new plugs and wires (and a new K&N air filter), my "butt-dyno" suggested a very small but noticeable increase in power, especially at the low end.

From reading the posts I found when investigating ignition upgrades, I decided to stick with the stock coil and just upgrade the wires and plugs. I got the really fat 9mm plugs and Denso's from Randy at http://www.webbmotorsports.com The 9mm plugs are not yet on his website, but he has them and they look great too.

 

thanks for the info. So the MINI comes stock with NGK? I am still researching mods right now for my mini so this helps. This may be a dumb question but how are plugs rated? Is it the high the mm the more the spark ---> increase in hp? how does that all work. I am a rookie when it comes to mechanics, but I am learning, thanks to the help of everyone on these boards.

If I havnt mentioned it yet... thank you for putting up with my lame questions.

 

I just searched denso's website and I dont show anything listed for MINI's. I tried a search for part by vehicle type... any other info on the denso's?

 

The MINI ignition system is really very well designed and implemented.

You probably won't get much improvement from any changes.

The -S seems to get a tiny bit of improvement from different plugs
from what I've heard on this site. No changes for the non -S model
have been really confirmed.

Watch out for snake-oil salesmen on the site. There are some
products that are a bit "out-there" for the MINI.

 

>>The MINI ignition system is really very well designed and implemented.
>>
>>You probably won't get much improvement from any changes.
>>
>>The -S seems to get a tiny bit of improvement from different plugs
>>from what I've heard on this site. No changes for the non -S model
>>have been really confirmed.
>>
>>Watch out for snake-oil salesmen on the site. There are some
>>products that are a bit "out-there" for the MINI.

LoL.... gee whiz, i wonder what you could ever be talking about trippy?

 

If you're interested in Denso Iridium plugs, you want the IK20's if you don't have a smaller pulley... IK22's if you do (One step colder)

I have them and like them very much!

 

9mm is the plug wire size, not a plug size. I have one grade colder Denso iridium plugs that are suggested with the 15% reduction pulley, but the stock NGKs are good plugs. Just my 2cents...

 

I am thinking about doing a pulley upgrade. so should I upgrade the plugs before the pullley upgrade. I dont think I will do any reduction for a few months, sacramento Ca summers can get hot, so I dont want to fry anything. As for pulley upgrade, I am thinking about 17%.... will I need to remap the ECU or worry about upgrading the intercooler for my hot summers? any ideas there?

 

If you plan on doing a pully somewhat soon, I'd hold off on the plugs. The Denso's are expensive and you will have to get new ones when you do the pully. I'd wait and do it all at once.

 

thanks for the advice. with the pulley upgrade.. i am just concered with overheating. I live in Sacramento CA and its a dry heat during the summer... anythoughts on pulleys with the weather factor? any info would be helpful so I can make my choice to do or not to do....

hmmm.....

 

I haven't seen any reason to change the plugs when you change the pulley.

 

andy- would it be an advantage to change plugs after a pulley swap? What are your thoughts for the wires, coil system and plugs. You always seem to hit it on the head... You have great advice.

 

I see stepping down to a colder plug as a safety move for higher boost situations. Every single power adder upgrade I have seen and done required a colder plug as part of the package, from turbo mods on my 300ZX and Evo 8, to supercharger installations on my '94 Mustang GT and current '90 Mustang GT with a Kenne Bell autorotor. Makes sense to take any precautionary steps you can when increasing performance by adding boost. Detonation is a very nasty thing.

 

Thats a good point 2 cool. Noted. I have not really decided what to do about the upgrades. Still thinking about it. It seems as if wires would be a good choice based on my life line (poll the audiance) however I am still thinking... keep the opinions flowing.