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No surprise but my Nola event was canceled.
pebskes should be here in a couple of weeks and I'll have something to fart around with.
I really should build a splitter and a good mounting solution but im feeling unmotivated with the current events. I probably should look into some choices for a rear wing also. Suggestions anyone? Nine lives racing seems like the easy good choice.
I'm pretty lucky to be able to work from home, however I'm the guy who still goes into the office most of the time. I like to leave work at the end of the day and have been more or less stuck working at home for the last few weeks.
First world problems.
Wtf is up with silver paint on the rx8. Maybe mine is just shitty but depending on the angle you look at it not all the body panels match. Other angles it looks perfect.
I got my review on of the lfx rx8 experience all written up, was just hoping to have some track data to include. I'm a bit of an audio nerd and happen to have a couple spl meters. 113db on the exhaust. To loud for this old man.
Looking forward to hearing more Mike. My car is running awful, backfires, stumbles and wont stay idling. I think it's a bad tune and waiting for Andrew to send another ECU. Until then i wait and can't use it. I did put a new muffler solution in place last weekend, it was just too damn loud. Like you i'm waiting on the Penskes and doing small stuff like sunroof panel, new steering wheel and seats.
Looking forward to hearing more Mike. My car is running awful, backfires, stumbles and wont stay idling. I think it's a bad tune and waiting for Andrew to send another ECU. Until then i wait and can't use it. I did put a new muffler solution in place last weekend, it was just too damn loud. Like you i'm waiting on the Penskes and doing small stuff like sunroof panel, new steering wheel and seats.
What muffler did you initially go with and what are you switching to? Andrew has my car in Colorado about half done, but he’s in TN now and with everything going I’m guessing it will be a long while. I was worried about getting something too loud so I opted to stick with stock axle-back exhaust for now, and change it later if I want a bit more.
Team - car looks good. Surprise, your cars making apr some coin!
Bronco - I wonder if that's an mas air flow issue. If your leaking air after it that would happen.
Loud exhaust - I'm not sure what he's using for resonators but there is one on each side just about as soon as pipeing goes horizontal. It merges right after them and then out a magna flow round can. There are 2 really nasty resonance zones, sounds like a rattle snake though an amplifier. Sounds awesome outside of that at WOT but 103db ot cruise is to loud for me. Drones like hell also. I can capture some sound if you want. I'll talk a few times for volume reference.
Edits coming soon, eating
Ok done eating.
I'm looking at burns stainless/profab. I'm curious if they can make something bigger, I have that whole rear section I can fill up. Im dabbling with the idea of making my own rear muffler. If that fails I'll start looking at the resonators. Maybe they are **** and better ones will do the trick. I could also add one after the merge.
The camero guys run a muffled x pipe, in reality it's probably just a 2 in 2 out muffler but it makes the sound really good.
has some videos posted of their exhausts. Setup is similar and they sound pretty good.
I'm not sure if we have room for a dual exhaust or I'd just copy that.
Onto a ricier topic,
Front bumpers - being bored I'm looking at front bumpers. I kinda like the mazspeed and I kinda like the s2 bumper. Re amemiya has something similar also but my preference is toward things like the yellow panspeed car. I don't need or want big gaping holes in the bumper.
All that just to say I will probably end up sticking with the stock s1 bumper with a splitter and close up unneeded holes. Going through start on that this weekend I think.
What muffler did you initially go with and what are you switching to? Andrew has my car in Colorado about half done, but he’s in TN now and with everything going I’m guessing it will be a long while. I was worried about getting something too loud so I opted to stick with stock axle-back exhaust for now, and change it later if I want a bit more.
I just picked a Flowmaster that fit the area and turned it sideways. the one he supplies is just a straighthru design. Stock will likely work well but i'm going to cut the rear bumper so it would look dumb.
Originally Posted by Mike D
I missed responses on my own thread!
Team - car looks good, how's your wing mount? Typical surface mount?
Bronco - I wonder if that's an mas air flow issue. If your leaking air after it that would happen.
Loud exhaust - I'm not sure what he's using for resonators but there is one on each side just about as soon as pipeing goes horizontal. It merges right after them and then out a magna flow. There are 2 really nasty resonance zones, sounds like a rattle snake though an amplifier. Sounds awesome outside of that at WOT but 103db on the load side is to loud for me. Drones like hell also.
Edits coming soon, eating
Found the issue. Bad relay plus a few pins on the motor harness were loose. It's at the shop getting a tune right now.
Yeah i'm likely to rework most of the exhaust as time permits. It's still too damn loud.
I added more to that last post. Share pics and sound/vid clips! Glad you got things going.
let me know what kinda power you make before and after also. I was going to hit the Dyno just for baseline numbers, I don't trust our local guy to tune it but he promised me some free time after I tuned my other car at his shop.
I missed responses on my own thread!
Front bumpers - being bored I'm looking at front bumpers. I kinda like the mazspeed and I kinda like the s2 bumper. Re amemiya has something similar also but my preference is toward things like the yellow panspeed car. I don't need or want big gaping holes in the bumper.
All that just to say I will probably end up sticking with the stock s1 bumper with a splitter and close up unneeded holes. Going through start on that this weekend I think.
My swap car has a replica Mazdaspeed, and I really like it. I thought it was authentic but when I arrived to buy the car I found it was fiberglass. It is one of the best replicas I've seen, so I ended up buying it anyway. The replica skirts are pretty meh. I also have a new Shine Autobahn that I picked up years ago, put about 20 hours of prep into, and then never finished it. I love the look of that bumper, but I know I'm never going to get around to finishing it, so I'll probably be selling that one.
Loud exhaust - I'm not sure what he's using for resonators but there is one on each side just about as soon as pipeing goes horizontal. It merges right after them and then out a magna flow round can. There are 2 really nasty resonance zones, sounds like a rattle snake though an amplifier. Sounds awesome outside of that at WOT but 103db ot cruise is to loud for me. Drones like hell also. I can capture some sound if you want. I'll talk a few times for volume reference.
Does your car have cats? These are the ones that Andrew said he uses for customers that request them: https://www.summitracing.com/parts/flo-2230125
There are some negative reviews there that talk about rattling, which was fixed with a replacement from Summit.
Correct me I'm wrong but first the catalyst generate heat as well? I was thinking along the lines of the transmission getting extra radiant heat and downstream exhaust parts having a shorter life. Probably not a huge deal.
If anyone is on the fence about a lfx rx8 and wants to check one out I'm located in Pensacola FL. My little nitpicking is in no way a complaint about the package as a whole. This might be my new favorite car.
Does this seem plausible?
Stage 1 of the exhaust plan, mostly following the same path that is in the video.
After y pipe I'm going to to do a 3 to 4" or 5" megaphone
Into 4" or 5" Flowmaster
After the muffler maybe transition the pipe size back down and out into a turndown.
So my thought behind this are based on wild *** guessing and an Awesome article I read a while back and will re-read now that I posted like I know wtf I'm talking about.
The transition from small od to larger pipe will cause velocity to slow down and pressure to increase. I'm assuming the slower exhaust gas speed and growing pressure will facilitate expansion into the big *** muffler for better sound suppression.
C’mon man, why are you using such a junky 2-1 piping joint like that? Don’t be so cheap.
Yah yah. It's not what I wanted either. I wanted burns/profab mufflers and collectors but the wait time was pretty long so I had keisler do his usual, I was anxious to get the car.
I'll end up with the burns/profab y transition on there eventually.
Because I had nothing better to do, I took my calibrated mic and my laptop out and drove the car with the windows up.
I should drive something else for a comparison.
Normal (honda minivan) car vs the rx8
I drove it like I stole it to get all the engine noise i could.
I still have my first gen rx7. Anyone want to wager my 13b at full song is quieter than the LFX Rx8?
So this is might be an interesting thing I stumbled on here that I haven't seen anyone do before.
If I was a BMW, Porsche or Miata guy, or a guy that had a shop and catered to those, I could profile the SPL of intake/exhaust setups, combine it with dyno charts and market setups that will pass sound requirements and make X power levels.
Im not that guy though, if anyone is, Ill share how I do this if your interested.
I re-found an article I read years ago by David Vizard about pulse wave termination boxes. Considering the simplicity and cost of testing it out I think I'm going to give it a try.
My exhaust is collected in the head so Id bet primary pipe length tuning doesn't matter much (have to verify) making it even easier.
I can build a 225 CI box(oval) - 2x 2.5 inlet, 1x centered 3.5-4" outlet
Ill build it like a set of mid pips so I can swap it out without redoing everything the do the dyno and SPL thing.
If its better than what I have now awesome. If not back to the drawing board.
Yeah, I think we may have even discussed that on here way back when, but Renesis based. I was reading his stuff about cam valve timing, general engine modifications, and tuning at least 35 years ago. All reciprocating engine stuff obviously. He was way ahead of the curve for his time and one of the people I put at the top for opening up my mind about how to logically assess and think through this sort of stuff. So you can blame him for all my nitpicking ...
Mike,
Here's what i did last week that made the car driveable. I'm done with exhaust now and moving onto other items. Putting in the AC lines tonight and prepping for track day on Wednesday. I took the rear section Andrew installed and placed it after the Y joint. Then i put a flowmaster muffler with a turndown sideways and exited behind the rear left tire. I'm going to cut the rear bumper as well since it will likely melt and catch on fire, maybe. That rear bumper catches the air anyway and is basically a parachute.
Now if i could just get those damn coilovers installed.
03-17-2020, 05:50 PM
