MazdaManiac dyno tuning in GTA - Spring/Summer 2010
07-30-2010, 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.
07-30-2010, 06:00 AM
#202
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.
08-09-2010, 11:19 AM
#211
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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?
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.
08-09-2010, 11:32 AM
#212
Extraordinary Engineering
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
Last edited by DarkBrew; 08-09-2010 at 11:41 AM.
08-09-2010, 11:36 AM
#213
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Have you found the cause to your low g/s? I'm going to try cleaning my maf + throttle body on the weekend.
08-09-2010, 11:45 AM
#214
Extraordinary Engineering
I still have low flow and still have to check the shutter valves.... All the other checks have been done
Last edited by DarkBrew; 08-09-2010 at 11:49 AM.
08-09-2010, 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.
08-09-2010, 01:16 PM
#216
Extraordinary Engineering
Post up a chart from your datalog
08-09-2010, 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.
Last edited by RotaryMachineRx; 08-09-2010 at 11:52 PM.
08-10-2010, 08:01 AM
#220
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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.
08-10-2010, 08:53 PM
#221
08-10-2010, 09:12 PM
#222
Extraordinary Engineering
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
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; 08-10-2010 at 09:14 PM.
08-10-2010, 09:34 PM
#223
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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; 08-10-2010 at 09:37 PM.
08-11-2010, 10:20 PM
#225
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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.