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MazdaManiac dyno tuning in GTA - Spring/Summer 2010

Old Jul 30, 2010 | 03:51 AM
  #201  
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Anyone know any good rotary shops my 05 auto rx8 Shuts off when I give it gas from a dead stop and will only restart after I let it cool off for 10 minutes. It does this after 15 minutes of driving. Car has new coils, plugs and wires as of 10 months ago. I took the car to dufferin Mazda so they could look at it and they wouldn't touch the car because I have no Cat.
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Old Jul 30, 2010 | 06:00 AM
  #202  
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If you want to take the car to a dealership, I've heard really good things about Mazda Toronto, and personally have good experience with Scarboro Mazda. If you want to take it to a shop, Mazdee's in Pickering is always a safe, no bs bet.
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Old Jul 30, 2010 | 08:42 AM
  #203  
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MazMark is also a safe bet... he's the dude that rebuilds Al's RX-7 motors. Plus he's just around the corner from Scarboro Mazda..
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Old Jul 31, 2010 | 02:11 PM
  #204  
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hehehe
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Old Jul 31, 2010 | 02:12 PM
  #205  
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click on the pics/

Last edited by Chad D.; Jul 31, 2010 at 02:22 PM.
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Old Jul 31, 2010 | 02:46 PM
  #206  
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I will post the rest of the pics from the day when I get my crap together. Got home to a flooded basement = submerged home studio. Shouldn't take too long though.
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Old Aug 1, 2010 | 10:00 PM
  #207  
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Last edited by DarkBrew; Aug 2, 2010 at 11:34 AM.
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Old Aug 2, 2010 | 07:23 PM
  #208  
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booya ... great pics guys
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Old Aug 3, 2010 | 06:40 PM
  #209  
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Finally got my access port damn I hate Canada post any ways car runs and Idles great now.
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Old Aug 3, 2010 | 10:44 PM
  #210  
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Originally Posted by hackdss
Finally got my access port damn I hate Canada post any ways car runs and Idles great now.
sweetshitdude! My car is also running very dreamy.
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Old Aug 9, 2010 | 11:19 AM
  #211  
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Originally Posted by DarkBrew
Okay...
Low power at the dyno, best symptom for tracking on the AP is MAF reading above 7K RPM.
Mine wouldn't crack 200g/s (most according to Jeff pull about 220)

Easy stuff... air filter, clean throttle body and MAF
Removed CAT, check throttle plate position at WOT

Still no significant difference but I did read 201 g/s tonight on a third gear pull to redline
My car is noisy and smells bad but it's still slow.
So, the cat is good and everything seems to be working.

A huge thanks to WCS and Thriller for all the help

So what's left? The intake shutter valves... Next project: Pull them apart and clean them...

More to come
Anyone want to help?

What should the throttle position be at WOT, I logged mine as maxing out at 67% in a 3rd gear pull to redline on the highway.... is this typical? I think I was getting near 200g/s only also but i'll have to double check that one.
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Old Aug 9, 2010 | 11:32 AM
  #212  
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Originally Posted by RotaryMachineRx
What should the throttle position be at WOT, I logged mine as maxing out at 67% in a 3rd gear pull to redline on the highway.... is this typical? I think I was getting near 200g/s only also but i'll have to double check that one.
67% is normal for WOT
Pull the accordion tube off the intake, turn on ignition - don't start the car, set WOT and make sure the throttle plate opens 100%.

If you're only pulling 200g/s then you have the same issue I have

Here's some data from my AP
Attached Thumbnails MazdaManiac dyno tuning in GTA - Spring/Summer 2010-sickrx8dynodata.jpg  

Last edited by DarkBrew; Aug 9, 2010 at 11:41 AM.
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Old Aug 9, 2010 | 11:36 AM
  #213  
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Originally Posted by DarkBrew
67% is normal for WOT
Pull the accordion tube off the intake, turn on ignition - don't start the car, set WOT and make sure the throttle plate opens 100%.

If you're only pulling 200g/s then you have the same issue I have
Not sure exactly what you mean here, you turn ignition on, dont start it, then push petal down and get someone to open the throttle plate 100% or what?

Have you found the cause to your low g/s? I'm going to try cleaning my maf + throttle body on the weekend.
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Old Aug 9, 2010 | 11:45 AM
  #214  
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Originally Posted by RotaryMachineRx
Not sure exactly what you mean here, you turn ignition on, dont start it, then push petal down and get someone to open the throttle plate 100% or what?

Have you found the cause to your low g/s? I'm going to try cleaning my maf + throttle body on the weekend.
Have someone hold the gas pedal down all the way and observe the angle of the throttle plate. It should be 100% open

I still have low flow and still have to check the shutter valves.... All the other checks have been done

Last edited by DarkBrew; Aug 9, 2010 at 11:49 AM.
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Old Aug 9, 2010 | 12:44 PM
  #215  
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^ So even with the log reading 67% the throttle plate is still physically going to be 100% open when you look at it? I'm still pretty new with the AP so I gotta play around with an actual data log on my computer to get some for sure numbers for my MAF.
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Old Aug 9, 2010 | 01:16 PM
  #216  
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Originally Posted by RotaryMachineRx
^ So even with the log reading 67% the throttle plate is still physically going to be 100% open when you look at it? I'm still pretty new with the AP so I gotta play around with an actual data log on my computer to get some for sure numbers for my MAF.
Yes.
Post up a chart from your datalog
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Old Aug 9, 2010 | 03:10 PM
  #217  
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I'll play around with it tonight
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Old Aug 9, 2010 | 11:44 PM
  #218  
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So here is my data log from tonight; ambient temp of around 70F. I'm doing the same as you, logging about 195g/s max. Car is a 2004 MT with about 25000 miles on it. I did do the throttle body bypass mod but I dont think it would effect the low g/s.




MazdaManiac dyno tuning in GTA - Spring/Summer 2010-data-log-aug9.jpg

Last edited by RotaryMachineRx; Aug 9, 2010 at 11:52 PM.
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Old Aug 10, 2010 | 06:05 AM
  #219  
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I've done the TB coolant bypass.
It hasn't seem to impact anything for me.

Will post log/graph later
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Old Aug 10, 2010 | 08:01 AM
  #220  
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Originally Posted by wcs
I've done the TB coolant bypass.
It hasn't seem to impact anything for me.

Will post log/graph later

Only other things I could think of would be... De-walled intake, took one screen out, K&N drop in that probably needs to be cleaned but I'm trying to get away without buyin more cleaner cuz the turbo install in Sept. Might just do it now for interest sakes.
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Old Aug 10, 2010 | 08:53 PM
  #221  
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Originally Posted by DarkBrew
Have someone hold the gas pedal down all the way and observe the angle of the throttle plate. It should be 100% open

I still have low flow and still have to check the shutter valves.... All the other checks have been done
When do you plan on checking the SSV's? Are you going to check the Auxillary valves and VDI valve as well?

My graph looks almost identical to yours... logged the exact same data
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Old Aug 10, 2010 | 09:12 PM
  #222  
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WCS and I will attack it with seafoam first, probably tomorrow night.
After that we'll reserve a weekend to pull things apart.

We're thinking SSV because the power impact is in the SSV RPM range

Last edited by DarkBrew; Aug 10, 2010 at 09:14 PM.
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Old Aug 10, 2010 | 09:34 PM
  #223  
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Originally Posted by DarkBrew
WCS and I will attack it with seafoam first, probably tomorrow night.
After that we'll reserve a weekend to pull things apart.

We're thinking SSV because the power impact is in the SSV RPM range

I just cleaned out my K&N tonight, wasn't too dirty, was only in for about a year, 5 months of which it was parked for the winter. I'll log my MAF tomorrow when it goes back in. I dunno about you but I don't think I'll need seafoam, I only have 41xxxkms on my car... but it is a 2004 so who knows.

Yeah I didnt look for a healthy graph to compare mine to so I didn't see when the MAF started to drop below par. Lemme know how the seafoam goes and if not looking forward to the SSV check.

Last edited by RotaryMachineRx; Aug 10, 2010 at 09:37 PM.
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Old Aug 11, 2010 | 10:06 PM
  #224  
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I got a 196 hp and 137 torque at the dyno day and I was only getting 209 g/s on the Mass Air Flow.

Last edited by wcs; Dec 12, 2011 at 08:06 AM.
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Old Aug 11, 2010 | 10:20 PM
  #225  
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Originally Posted by wcs
I got a 196 hp and 137 torque at the dyno day and I was only getting 209 g/s on the Mass Air Flow.

I cleaned my K&N drop in and re-oiled it, did another pull, logging 197g/s now, 2 more than Monday with about the exact same ambient conditions. Maybe I'll clean my TB and MAF when I get a chance and see what that does, prob not much because of my low mileage though.
Wish I had a dyno for mine not sure what it's got for whp. How accurate is the dyno on the AP? I did 5 runs with that and got between 195 and 205 whp. My car is pulling great, feels good but I would love to have that extra 15-20 g/s that I seem to be missing before I install my turbo next month.

lol and if you right click on ur MAF line in your Excel graph then select display data on secondary axis or something like that you can make an axis on the right side of the graph.... took me forever to figure that out, don't know if you knew that or not but a handy tip for logging alot of different data.
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