Throttle Body

Good choice Mike -

I've got a Dinan throttle body on mine too.

mikesminirox wrote:  As some of you know. I installed an M7 throttle body about a month ago. The first one caused the car to have a lot of flat spots all thru the RPM range and throw codes. The second was better but still had a flat spot(like applying the brakes) around 3200 rpms in any gear and the YO YO(uneven or jerky throttle). I was told that with a larger throttle body that was the nature of the beast. I was thinking it was a software issue. But after getting to drive Sheri's Austin(2002 MCS with Dinan stage  5 package) I was convinced it is the throttle body. So I installed a Dinan throttle body tonight.  The car is back to it's smooth yet still quick preformance. I would like to thank Terry at NW Mini for working with me to solve the problem. Just wanted to let anyone thinking about a throttle body know that the bigger the bore the more chance for irratic preformance.                          Mike PS: I personally think the Dinan S 5 package gives you the most HP for the dollars(even though I still think it is over priced)

 A bonus has been fuel milage has gone from 30mpg to 39mpg hwy and 24mpg to 33mpg city a little less when I,m driving according to the OBC. I have to say I am very pleased with the preformance of the dinan products. I was worried about lean conditions with the milage change went auto-xing on the 5th and had no codes or problems. 

Careful on the mpg - When I installed my Dinan my mpg went down somewhat.  My guess is that Mike was getting particularly poor mpg with the other non-stock throttle body.  Mike - am I right?

My current mpg with full JCW (upgraded with new air intake) and the Dinan throttle body is approximately 34 hwy and 28 around town

 I want to make it clear. I am one who If you say I can't do it, then I must. I was told the rear mud flaps would noy fit the S. Minirox has rear mudflaps. I was told the WORKS was the only way to achieve 200+ HP. So I went a different way. I believe I have done what I set out to do with some trial and error. For 1000.00 dollars I feel I have the hp of the WORKS. I have done all the install myself. So add another 1000.00 for install. Still 2000.00 compared to the Works price is a great deal. I plan to dyno in the near future just to confirm. I have confirmed at the track that Minirox can hold her own against the JCW and Dinan. That's my story and I'm sticking to It. :)

                                    Mike

Rob Betts wrote: Hi Mike, Who makes the M7 throttle body? And how quick did you go at Bremerton? Rob

 Rob

 Please read my post at the top of the page. I had issues with the M7 TB. I was told the flat spot was the nature of the beast. I could not stand it. So I returned. Also was not impressed with the QC

 As far as the drags. Sharkreef did a 15.249, I a 15.342 and Bert 15.399. Here's the rest http://www.psmini.org/forum/forum_posts.asp?TID=544&PN=1 &get=last#4522

                   Mike

 The Dinan is a 59.75 Dinan says stock is 56mm others say 58mm, Yes they all bore stock usually the ones that have been returned for core. Dinan does not require a core, they bore new TB so the plus to dinan is you keep your stock TB and between the two Dinan was cleaner looking. All I know is the Dinan works and the M7 worked but had side effects that I did not like(flatspot) My drag times were with the M7, as long as you are on it. It ran great. I hope to get one more drag in before the season is over with the Dinan. :)

   As they say about the Dinan all the HP with none of the side effects.

Dave wrote: Hmm - they didn't give me my throttle body back - claimed there was a core charge :-(

 Sorry Dave

  Let me clarify. Just recently they have changed, to many problems with the used TBs. Just this month they do not require cores anymore. They have gone to new less chance for problems.

                                   Mike

Dave wrote: Interesting - thanks Mike - do you know what sort of problems they were experiencing?

 From what I understand it was a combination of slow core returns and some just hammered throttle bodys,people not taking care after removal. Drop kicking across the garage floor ect.