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Ive been trying to get rid of the hesitation in my 'Speed and the only thing i can think of is to get a fuel management system. From what i see it looks like a lot of people are happy with the MPI tuner, so heres a couple of questions from someone that knows nothing about fuel management...

I have done some homework and finally found out how a wideband o2 sensor works, but i 'm still trying to figure out if its is something we can use in our cars. Can we just switch out our o2 sensor for a wideband and if so will that leave our cars constantly running in closed loop(which should...

I was wondering if any1 has experienced this: Over the last few days i have been getting serious turbo surge or hesitation when under boost, accompanied by a high pitched whistle that sounds like its coming from the airbox. Has anyone else had this problem?? My Speed is totally stock and has...

Does anyone know if there are any BPV's that are a direct replacement for or crappy nippon-denso ones with a 1/2" in/out??

I have seen different threads on the forum where people are sayin that the AWR A/T mounts are supposedly softer and more streetable for daily driving. Im about to buy a set, but first i was lookin for some feedback from people that have the A/T mounts and whether or not they are better than the...

Is it possible to put a 225/40/17 tire onto our Racing Harts without any rubbing or fitment problems??

I was working under the hood yesterday with the motor running and i the motor sounded unusually noisy, so i brought it up to about 2500rpm or so and it sounded almost like a knock. Do all our engines seem to make a lot of noise and im just noticing or do I have some issues here?? The cars still...

Quick question...does the intake include a tube going from the intercooler to the TB too??

I was wondering if any1 could recommend which FMIC kit seems to be the best. Im looking to do it with my tax check and i know there are a couple of companys out there that make them. Im looking for one that i wont have to modify to much of the chassis for. Also, whats the deal with ION's site??!!

Can someone please tell me what AWR's website is or where I can find their motormounts at??

I was wondering if any1 had the same problem im having...when i take off from a stop with the wheel cut to the left or right, i get a really bad grinding/clicking noise from the trans or axels...it sounds like a bad cv joint, but it only does it at take off and not at higher speeds. Any1 have...

Where is every1 getting there pillar pods from???

Ive been trying to figure out a way of running our cars with an actual BOV rather than a BPV.I think i might have come up with a way but i need some technical advice. From what ive been thinking, if i moved the MAF sensor onto the intercooler out to TB pipe, it would be after the blow-off...

Is ne1 currently just running an axelback exhaust, and if so what company makes it(them)?

Im looking to get a co2 sprayer for the factory intercooler... i was just wondering if any1 in here has installed one and if so are the performance gains worth the time and money??(I know the ultimate answer is to get a FMIC, but my pockets are a little shallow as New Jersey is raping me for...

Does any1 know if mazdaspeed is actually making parts for our cars or is it just rumors. I called Mazda USA this week and they gave me a number to call, but it was for Mazdas racing division...from what they told me there arent any parts in development because there arent enough people using...

NO...but the dealership has it enough that they probably have!!!

I was wondering if anyone has a set of Mazdaspeed cams in their MSP and how they r working. Im thinking about getting a set(supposedly 10-20 hp) but im not sure if they will work right without getting the computer re-flashed(not the flash mazda has out to fix their original mistakes)and from...

Hey...New to the game...just purchased a 2003.5 Mazdaspeed last friday. I might be showing up to the Kent meet...anyone from NJ goin...