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Little update: I put the original PTP intercooler back in and response was more what I'm used to. I could t fully get on it because roads are hit and miss icy today but definitely built boost very noticably. Soooo.... I will pressure test the new IC and pipes as an assembly whip it is out of the car. I only removed two clamps to take it off, everything else is stayed together.....
Oh and my OE O2 sensor came back to life. Don't know how long it will last. It was odd though, when the last one died I had actually been getting a P0138 about the rear sensor. The front sensor finally started reading lean until it flatlined at 20.0, which is what my first sensor did. This new sensor, which has maybe seen 100 miles, flatlined at 14.7 yesterday and I also got a P0138 for the rear again. I removed the rear and masked the codes for the rear and the front started reading again. Are the front and rear related at all?
I don't even have a rear O2 going to my pcm.... rear O2 goes directly to my wideband.
Also I'm not pushing the boost to the extent you are but I put a new front O2 sensor in back in 2010 when I did my turbo install and it still reads properly. I can't say I've heard of front O2 sensors crapping out as often as yours have! I'd guess that your EGT's are much higher than mine though.
Last edited by RotaryMachineRx; 01-15-2016 at 04:31 PM.
I hadn't been running one either until last summer when I was having trouble getting some of the emissions monitors to go "ready". I just never bothered to take it back out, until now....
yep and loving it Pretty much settled on E50. Based on the information I have found it has pretty much the same anti-knock properties as E85 with less hit to MPG. E85 does have a higher impact on cooling the charge, but E50 is still much better than gasoline in that regard. Seems to be a pretty good compromise for me.
So EGT's probably aren't alot higher on your car with Ethanol than my car on gas and 8PSI less boost. I wonder if your O2 sensors don't like the Ethanol itself?
So EGT's probably aren't alot higher on your car with Ethanol than my car on gas and 8PSI less boost. I wonder if your O2 sensors don't like the Ethanol itself?
Agreed about the higher EGT. Was actually considering this as root cause for the hoses catching fire. Not sure what AFR you are running under boost but I was running low 10's to avoid knock. With E50 I am running mid 11's, which probably increases EGT even more.
Originally Posted by Brettus
have you noticed better spoolup on any of the Ethanol mixes ?
You know, that's a good question, not entirely sure. I do know those last few runs the car took off like a rocket but I attributed it more to leaning it out by using ethanol but not necessarily due to the ethanol itself. But I'm no expert, just experimenting. I wish I had a lot for the las run when the hose blew. It was logging but something happened because when I got home the file was on the AP but with no file size and wouldn't download.
Here is the last log I have just prior to the coolant hose blowing. The tune that I had in when the coolant hose blew had a couple degrees of timing added back in that I had previously pulled out when I was getting timing pulled on gas...
Brettus, I would be curious to see our logs overlaid, if you wouldn't mind, just to get a relative comparison. We may not have the same VD settings...
The first graph I plotted with GVW at 3175lbs, but forgot I had the sub and amp in the trunk which is around 50lbs, so the second graph is with GVW at 3225lbs. Didn't make a huge difference, but wanted to account for it. I weigh 175. I try to have my tank around 1/2-3/4 full when taking lots so that weight is hopefully somewhat consistent.
Are you referring to VD or logViewer? Here is a logviewer plot with no correction.
Is that the mazdaedit software ? Looks the same .
On M/E it has a 1.1 correction for dynojet dynos . Doesn't look like anything like that on your software.
What specifically are you referring to not looking the same?
logviewer is from Epifan:
]
The Virtual dyno charts you posted first are different to the M/E ones . That's what I was meaning . IN M/E the correction is 1.1 for dynojet . In virtual dyno it obviously is a different correction factor .
I didn't know you had the logviewer software as well . Cool
I'll get some 14psi logs once my new muffler goes on and we can compare .
Agreed about the higher EGT. Was actually considering this as root cause for the hoses catching fire. Not sure what AFR you are running under boost but I was running low 10's to avoid knock. With E50 I am running mid 11's, which probably increases EGT even more.
No what I was getting at is that it's probably not from too high of heat, Ethanol runs much cooler than gasoline does it not? I run 9.5psi at about 11.1-11.2 AFR; so what I was saying was that if you are running ethanol with like 5psi more than me on gasoline our EGT's probably aren't too far off..... You running top mount compared to my low mount and my pushing the stock, non-water cooled Greddy to basically its limit will counter each other heat wise; so I'm thinking you just have **** poor luck with the O2 sensors!
No what I was getting at is that it's probably not from too high of heat, Ethanol runs much cooler than gasoline does it not? I run 9.5psi at about 11.1-11.2 AFR; so what I was saying was that if you are running ethanol with like 5psi more than me on gasoline our EGT's probably aren't too far off..... You running top mount compared to my low mount and my pushing the stock, non-water cooled Greddy to basically its limit will counter each other heat wise; so I'm thinking you just have **** poor luck with the O2 sensors!
Sorry, sometimes I read too fast before I respond lol... I was just thinking about being way leaner increasing my EGT's...
The upstream oxygen sensor is still working after disconnecting the rear. Not sure if they are related but I guess we'll see how long it lasts... Boost is still responding like I expect with the old FMIC, haven't had time to pressure test the new one yet. Looks like my clutch is starting to slip tho... Like you said Brettus, it's always something
Agreed, tho until I pressure test it I'm not writing it off just yet... BUT... If it pressure tests fine it is NOT going back in
I am curious to see what my temps will be once it warms up. I did find and fix a good couple kinks in the lower rad hose... Also pulled out the low temp t-stat and put a new OE t-stat in. I violated good science practice by changing multiple variables
Heh... so I am pretty sure I've gotten to the bottom of my oxygen sensor issues... It started getting more and more sporadic, sometimes it would be fine, other times it would flatline at 14.7. I finally pulled the extension cable out and sure enough, the pins on the ECU side of the extension cable were pushed in some. Pulled them back out with needle nose pliers and they seated back into place and so far no more issues.... Fingers crossed this is it!
Some exhaust stuff I experimented with last year that I didn't post. I pulled out the packing out of my MS cat back and it really gave it a nice deep tone along with the AP midpipe. The turbo quiets things down vs a non-turbo exhaust, so it's not obnoxiously loud. I also made a 3 inch dump pipe that bolts directly in place of the mid pipe. That was very loud, of course, but not in a very good way and it didn't really make any noticeable difference to spool or boost that I could tell. It did make the turbine whine much louder, which was kinda cool. I did have my daughter in the back while driving like that once and it backfired. It banged the bottom of the car pretty hard and scared the crap out of her...
Anyway, just sharing random stuff I'll have to get some audio while driving...
01-15-2016, 03:55 PM
Pretty much settled on E50. Based on the information I have found it has pretty much the same anti-knock properties as E85 with less hit to MPG. E85 does have a higher impact on cooling the charge, but E50 is still much better than gasoline in that regard. Seems to be a pretty good compromise for me.
