mp3-79bronco
Member
- :
- 2001 protege mp3
so do those twiggys have a noticeable lope at idle? any sound clips or anything?
CulRidr's MP3 N/A build (~150whp goal)
- Thread starter CulRidr
- Start date
Hell ya they do, although I've tuned the cam gears since so the idle isn't as crazy...
http://www.mazdas247.com/forum/showpost.php?p=4648001&postcount=339
http://www.mazdas247.com/forum/showpost.php?p=4648001&postcount=339
- :
- 02' Protege ES (Gone)
16' Mazda 6 sport manual
needs more vids......
"Small" update: replaced my primary O2 sensor prior to having Focus offer to tune my car. Car now has a solid base tune and bloody hell does she ever pull now! She's got solid 13s (AFR) all the way to the rev limiter at 7K where she feels as though she could keep pulling if it were able to. Scary to think how much more power I can pull out of it according to him with a more aggressive tune!
THANK YOU! (bow)
THANK YOU! (bow)
yeah get aggressive with it...the motor responds well to timing... feed it as much as you are game to.
sounds like its time to get her on a dyno
Focus didn't want to push it too hard to start due to an exhaust flow I'll be fixing soon, but he did say there was more timing to be played with. We'll also be doing some AFR datalogging with an LM1 to see where we can improve. Following that, I'll eventually get myself on a dyno to post up some numbers and find out just how much the money I spent got me...
you can probably still get power out of the fuel side by pushing the afr's into the 12s as you start getting higher in the RPM..
tune sounds fairly conservative
you can probably still get power out of the fuel side by pushing the afr's into the 12s as you start getting higher in the RPM..
tune sounds fairly conservative
It is conservative, it's still pulling some timing over the whole powerband. A/F are much better in the high 12, low 13s. I don't think he needs to go richer there as it is N/A.
- :
- 02' Protege ES (Gone)
16' Mazda 6 sport manual
good to hear things a progressing for ya man.
Just to clarify, wasn't criticising the tune, just suggesting that it might be a little on the conservative side so he's got more to look forward to should he decide to take it out to the ragged edge
pretty sure under full load my tune moves from about 13.0 to about 12.6 at redline (been a while since i looked)....
and the motors really respond well to timing (and timing helps fill the rather large "hole" in the power curve brought on by the big cams...providing some much needed midrange) - so once thats a little more agressive you should see a nice jump
Thanks for the comments and suggestions, we'll definitely look into it when we next get the chance to get together for some more aggressive tuning. Are you suggesting we actually advance the timing? We were presently pulling the timing last I checked
The "only" big hole in the power curve with the way I adjusted the cam gears is between 2K and 3K where there is a definite lack of, well, everything
. I do feel it pulling beyond that, all the way to the rev limiter which seems to be at 7000 on my car 
Maxx Mazda
Contributor
- :
- Stock P5
Thanks for the comments and suggestions, we'll definitely look into it when we next get the chance to get together for some more aggressive tuning. Are you suggesting we actually advance the timing? We were presently pulling the timing last I checked
The "only" big hole in the power curve with the way I adjusted the cam gears is between 2K and 3K where there is a definite lack of, well, everything
Why the hell would you retard the timing on an N/A engine if you're not pinging?!?!
That has yet to be established, don't forget he's running higher compression and with Twiggy cams. SO I say run safe first then start tuning for more power...
Thanks for the comments and suggestions, we'll definitely look into it when we next get the chance to get together for some more aggressive tuning. Are you suggesting we actually advance the timing? We were presently pulling the timing last I checked
The "only" big hole in the power curve with the way I adjusted the cam gears is between 2K and 3K where there is a definite lack of, well, everything
What have set your cam gears at?
If you've got a hole down low, its because of the cams. Unadjusted the cams dont really "come on" until around 4500 rpm... they kick like a mule when they get there, but the motor will feel lethargic.
as for "why the hell would you pull timing"... timing is usually the last thing i adjust. Its a good idea to go for a relatively "safe" timing curve, lock the AFR's down, then start winding more timing into it progressively. Preferably on a dyno where road noise isn't going to interfere and you can get a set of headphones on the knock sensor.
as for "why the hell would you pull timing"... timing is usually the last thing i adjust. Its a good idea to go for a relatively "safe" timing curve, lock the AFR's down, then start winding more timing into it progressively. Preferably on a dyno where road noise isn't going to interfere and you can get a set of headphones on the knock sensor.
Mine had a huge hole below 5000 before I adjusted the cams. Now I'm in much the same situation... lot of gid-up-and-go up to 2500, then a hole up to 3000, then pulls hard to the redline after 4k.
Have got to get my maps cleaned up one of these days... Changed a step colder, bumped up the timing a lot, then stupidly bought platinum plugs without checking the number... back to stock heat... and the car doesn't like it.
Eagerly awaiting dyno.
Have got to get my maps cleaned up one of these days... Changed a step colder, bumped up the timing a lot, then stupidly bought platinum plugs without checking the number... back to stock heat... and the car doesn't like it.
Eagerly awaiting dyno.
depending on resistance to detonation, you can actually fill the hole somewhat with timing. Its a common thing on cars with variable cam profiles (vtec etc) to ply the hole with lots of timing to keep the curve nice and linear... the same applies to us with a single cam profile and big cams that are not that efficient in low RPM...of course you are limited in how far you can push this.
I'm essentially running them as turbo cams with +/- 12 camshaft degrees for intake/exhaust, ie: 6crankshaft degrees (did I get that right?), closing most if not all of the overlap... definitely moved the powerband lower down. Not sure about how much "gid-up-and-go" I have in the earlier RPMs, but it does pull well most of the way unless I shift too early. If I do so and "land" around 2K or a shade higher, that's when I get a complete lack of power/torque until 3X00 RPMs.
