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So I purchased a re-manufactured head, new old stock FSDE Mazdaspeed block, new sensors all around, brand timing belt kit, brand new oil pump etc (basically EVERYTHING brand new) and had the motor put together and installed along with my FSZE intake cam and Corksport Exhaust cam. Shop that put...

So after my blue Protege5 was rear ended, I wound up buying a silver one... long story short, the guy who sold it to wasnt exactly honest about the condition of the motor. Head was warped, blown head gasket and the bottom end was completely shot (found this out after replacing the head on the...

So Ive been spending a lot of time researching the CEL P0171 aaaaaaaaand Im really stumped. But let me back up A few weeks back, my P5 started having issues starting. Its gotten to the point where it takes roughly 2-3 times turning the motor over letting it rotate 4-5 times each cycle to get...

So its ANOTHER thread in regards to ECM programming... heh, but this one IS actually gonna go somewhere. In my ventures to retain the factory ECM while figuring out how to tune it and KEEP emission controls, Ive stumbled into a lot of different avenues. Including one where I found and spoke to...

Does anyone know if the Sport20 AWD 4-2-1 headers have any fitment issues on the USDM FSDE? I have the opportunity to pick up a REALLY nice set of MaximWork 4-2-1 headers, but it looks like the area that connects to the secondary cat section is longer than the USDM header in that area. Anyone...

So I might be taking on YellowSpeed as a potential sponsor. They are interested in having their coilovers on my car, however, before I pull the trigger I would like to see some pictures from actual members on how low their coils go in the rear (or just all around period). Currently Im running...

I wound up picking up a set of OBX headers, I dont need these anymore. They are brand new and never even taken out of the plastic. I bought the header about 2 1/2 months back. No idea what fitment is like. If they fit awesome, if they dont fit, dont say I didnt mention it!!!

Will a Mazdaspeed Protege catalytic converter bolt up to a Protege5? If so, would this eliminate the fouling of the secondary O2 sensor after installing an aftermarket header seeing as it mounts between the cats? I know the secondary O2 hole in the header would need to plugged to accommodate...

I have a brand new eBay Protege5 catback for sale. I bought it for the mid piping section which I mocked up on my car and found out the muffler section flange is at different angle than the OE flange (I have a OBX axleback that I absolute love), so I didnt use the exhaust. Wrapped everything up...

What diffuser is this? FOUND! Pics & link in thread! So Ive been hunting around Google for a while now trying to figure out what diffuser this is. Ive tried contacting the user on and off the site, but he has never responded... soooo yeah, anyone have any clue what rear diffuser this fellow...

Hey all, I run a brand called DorkiDori AutoCouture (some of you MIGHT remember me selling Mazdaspeed shirts on here back in 2010). I started replicating hard to find old school aero parts for the S13 and S14 back in 2013 (I ONLY replicate discontinued pieces). Well, I was curious if any of you...

Ok, since someone asked me when I was gonna start one in the "What have you done to your Protege today" thread... I caved and decided to start one. Bought the car May of 2015 in a pinch. I had wrecked my Lexus IS300 5spd w/LSD and I was desperately in need of a daily driver. I have a damn near...

Seeing as every brand who makes a full catback wont part with a mid pipe, and no one offering them separately anymore... Im in the market for a used upgraded Protege5 mid pipe! Let me know what youve got. Must be willing to ship!

Has anyone had any issues with the lower part of the damper (the actual shock) on their rear coilovers hitting the ebrake line? if so, how did you fix this to make them go lower? i just installed a set of Godspeed MonoSS coilovers over the weekend and ran into issues with the damper section...

So, Ive spent hours searching for an answer to this question both on and off the forums and I havent been able to find any sort of conclusion to the problem. I have a 2002 Protege5 with 200k+ miles on it... now before I go into any further details, this is what Ive done since I purchased the...