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  1. *** This page is currently a Work In Progress *** RX8 Buying Guide: http://irishrotary.com/forum/index.php?/topic/10706-rx8-buying-guide-by-dara-obrien-on-micks-garage/ RX8 - Once you've bought it: Originally taken from here & adapted for the Irish Domestic Market. Your first $100 with your previously loved RX8…Assuming it is not a new one, with a Mazda Warranty, There are several modifications that really helped with my 04 detailed in the next several posts. These are based on my first year with the car. All of them I wish I had done earlier. All of them I got from this forum. The hope is that you do not have to look as hard as I did and can get the benefits a bit earlier in your relationship. I tried to group them into collections that are easiest to do together, in a order that lets someone ease into work under the hood. In most cases, I tried to point to existing threads because they, for one, existed, and two were likely better than what I would have written. Some I had to write, not because I invented them, but because I combined ideas from several sources. I tried to organize them with a title, why you would want to do this, some benefits, and then a link to how to perform the modification. I print DIYs and keep them in a notebook in the garage. I would suggest printing the ones referenced here before you start the job. Optional Reading Assignment, if you are really interested in the 8. RIWWP has created a great place to start learning titled New and Potential Owners. Check it out at New and Potential Owners START HERE! - RX8Club.com Additional info, (thanks wcs, mazurfer): Because the rules say these posts have to have steps...Step 1, read the next post.Good Luck and Happy 8’ing![ Key Words to help make thread easier to find; Cooling System, Electrical Grounding, $100 Thread, First Modifications, First Mods, New Owner, Clean MAF, Fans On Low, Throttle Body Bypass, Oil Cooler Air Flow, A/C Reprogram ] Group 1, of the First $100.. Total investment, about $25. Time to mod, outside of shopping, about 2 hours tops. These modifications are minimally invasive, easy to start out with, and all provided me benefits.Step 1.5 [saw this one from mastiffkb][Added August 2014]Clean the battery terminals. No DIY provided. If you are not comfortable doing this, I do not recommend trying. But, clean power and ground solve lots of problems. Step 2Clean the MAF: Fixes rough idle, poor gas mileage, stallingFavorite DIY is Engine Light - 2096 Code - RX8Club.com On the MAF, the car "can" idle with a dirty MAF, just not as effectively. it is a little rough. If you add the compressor load, and the electrical load of the blower in the car, and the load of the radiator fans and whatever the AC clutch draws (probably not much), you are really trying to draw a lot of power at only 750 RPM. If air and fuel and spark are not just right, it can miss, or at least not burn the fuel right. You get your air data from the MAF, if it is off, then fuel is off, car runs like crap. It made such a difference I did all my cars. My daughter commented the next day that the 6 was running better.Step 3:Insulate A/C LinesFixes poor AC performanceFavorite DIY is DIY: Easy MOD for colder AC - RX8Club.comSuggestion is to hit Home Depot or Lowes, pick up the split black foam pipe insulation for 1/2 inch pipe. You want the kind that has adhesive on both sides of the split. Put it on, pull off the clear backing tapes, stick the two sides together. I did not use tie wraps or anything. It is holding together fine in 100 plus degree outside heat. The color blends well with the rest of the engine compartment. I did both lines.Step 4:AC Amplifier Re-ProgramHelps poor AC performance.Notes: Procedure states that it only changes the air source. Many have said that it does more than that. I used a temp gauge and saw lower temps after, as well as reduced A/C cycling. Best DIY is … looking for some help - RX8Club.com To save clicks, the basics are here: Verify ignition switch is in OFF position. Press and hold the front defrost and air intake selector buttons simultaneously. Turn the ignition key to the "ACC" position for 3 seconds. (Continue to hold the buttons down from step #3.) Turn the ignition key to the "ON" position for 3 seconds. (Continue to hold the buttons down from step #4.) Successful programming will be confirmed by the rear defrost indicator light flashing 3 times. NOTE: If vehicle's battery dies or cables are removed, the programming will not be retained and must be performed again. Step 5:Buy a long funnel for adding OilFixes oil in the: air filter, maf, throttle body, little resonator box, intake….Basically, when you change the oil in an 04, 05 or 06, use a funnel long enough to extend past the air line that comes off the oil fill line.Step 6:Vacuum the cabin air filter. Believe it or not, it can lower AC temps 1 to 2 degrees (measured) if the old one is dirty. I listed this as a clean it, use a vacuum with a soft brush on the end. This lets me keep it in the first $100. Use the DIY below to get it out and put it back in.Favorite DIY is cabin filter change??? whos done it - RX8Club.comStep 7Read the next Post Group 2 of the First $100. Total price here is about $50. You will want about 4 6 foot pieces of pipe insulation ($8) and a grounding kit (cheap ebay one, usually $30 with shipping) and a can of brake cleaner. These are also grouped to be done together. All of them want the air box and shelf out. Other than cutting the air box shelf, none of these are invasive. Step 8: Block Air Flow around Radiator, Direct Air through Radiator Fixes overheating, anything related to hot engine, poor AC performance I did not find a DIY here. And, I do not have any pictures of when I did it. Basically, with the air box out, shove the round pipe insulation into any gap around the radiator that exists. If anyone takes pictures of what this looks like, ideally while they do it, or has a procedure, please let me know. I searched and could not find one. {Edit 9/15.2013} Step 8.5 While the air box is out, it is easy to see the Eccentric Shaft Sensor. The thread below will help you recognize it, has pictures, and a drawing. tired of searching ess cleaning I would not pull it out. If you can see it, you can hit it with brake cleaner. Just blast it with Brake cleaner for several seconds (with a suitable catch pan like a cookie sheet under it to catch what runs off), it should be pretty clean afterwards. If not, repeat. I suggest some form of eye protection for this one. I filled both eyes with carb cleaner once, that sucked. If you need to reach in with a soft cloth, or with a soft brush to loosen stuff up, feel free to do that. There is another thread out there where someone tried to remove it and the bolt broke. That is why I advocate leaving it installed. Step 9: Grounding Kit Fixes rough idle, maybe some gas mileage, entire electrical is happier, stalling Best DIY is … my grounding kit results - Page 3 - RX8Club.com There will be several comments on this one that advocate a trip to Lowes or Home Depot for wire and connectors. There are several posts on the forum as well. I recommend searching and reading. There is a ton of knowledge. The benefits exist of both, I actually got some benefit from just adding a little electrical grease and a star washer to each joint, but bought and installed the kit anyway. You decide. I would get the kit, follow Jeff’s DIY, use star washers and grease. I do strongly recommend re-crimping the connectors from the cheap kits before you use them. Use a vice, big pliers, or a hammer. My kit did not have well crimped connectors. The vendor offered to exchange it and pay shipping both ways, but I had already repaired and installed. {EDIT 7/3/2012} Evidence is mounting that cleaning up grounds and adding the star washers is making a big difference. Grounding kit might be overkill. Maybe if a few try it and report back, we can save folks a few bucks. Step 10: Air Box Shelf Breather Holes. Provides more air flow through the radiator on the driver’s side. Favorite DIY is Air Box Ventilation - RX8Club.com Step 11: Read the Next Post Group 3 of the First $100. Total price here is about $15. That is for the hose splice connector and a short piece of 20 ga wire. The throttle body mod is invasive, you will see coolant, you will likely spill coolant. It is best to spill COLD coolant. The fan modification is invasive as well. However, this version does not require you to cut into your electrical system. If you have a disaster, you just need to get a new relay. Step 12:Throttle Body Heat Bypass [AKA Coolant Bypass], NOT screw in the hoseHelps poor performance in high tempsFavorite DIY is (in 3 pieces):DIY: Throttle body bypass mod - Page 9 - RX8Club.com DIY: Throttle body bypass mod - Page 9 - RX8Club.com DIY: Throttle body bypass mod - Page 9 - RX8Club.com and see DIY: Throttle body bypass mod - Page 10 - RX8Club.com for thoughts on the “screw” in hot weather. Step 13:Fans on LowHelps high engine compartment temps, poor AC performance. Need to be able to solder a wire.Favorite DIY DIY: Radiator Fan Switch... - RX8Club.comStep 13.5Suggested add from SayNoToPistons, Mod from Ash8Increases air flow through oil cooler(s). An alternative approach is to use a utility knife with a new blade.Favorite DIY is DIY: Improve OIL Cooler Air Flow Up to 10-15% - RX8Club.com Step 14, [added October 2013, yeah gov slim down]Clean the SSV. Step 14.9:Read the next post.Zoom Freaking Zoom Group 4, outside of the First $100. Step 15:Coils and PlugsFixes flooding, poor idle, stalling, squished bird sound under the hood if it is still there after the First $100 list.Favorite Plug DIY is DIY: Spark Plug Change.Favorite Coil DIY is DIY: Mazda Ignition Coils (with pics) At this point, I have a 2004 RX8 that idles smoothly, in traffic, in 99 degree weather, with the AC on blowing cold (52 to 54 degree air). I sat in a parking lot in 100 degree heat and idled for 20 minutes as a test waiting on my kid to get out of a test. Car also pulls much stronger, especially above 6,000. Starts great, and can be started, moved and stopped without flooding. I picked up a few MPG over the year as well.Zoom On.
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