Why does it take 13seconds to get to 60mph?
- Thread starter P5inMD
- Start date
1
16902
jeg0024 said:
I used to run premium when I was N/A and never really noticed a bump in mileage over regular either.
One thing I have always wondered though was whether or not it kept me from having to clean my EGR valve. I have never cleaned it in the almost 40,000 miles that I have owned the car. I have never had idling issues or anything. I also regularly used fuel injector cleaner. But, even then, I'm not sure that this would have anything to do with that or not. Any thoughts?
bradicus18 said:
Ive never had any problems with it either. Ive always either ran an injector cleaner or premium fuel atleast once every 3-5k miles. Running higer octane really does keep your engine cleaner and may even remove some previous carbon build up. I did use sea foam just once after 65k miles and im not sure it did much, im not sure there was much there to get cleaned out.
- :
- '04 RX8
I didn't read the whole thing, but my manual P5 does 0-60 in under 8 seconds for sure but i've never timed it. I hope most of the first 2 pages were not serious. I give up on this forum and any "real" information. bah
- :
- 2006 Infiniti M
using 89/93 octane without a stand alone ecu/mp3 ecu will dirty your egr valve sooner, it will cause deposits because it doesnt burn all the way AND it will cause you to in the long run get worse gas mileage because you are running richer becaues its not all burning. for the fourth time ive said it. read edwins faq on this. also turning that fuel pressure regulator hasnt hurt anything because its not doing a damn thing. the first time you turned your car on your ecu reset the fuel delivery to stock. and before you say zomg i got bettar gasmileage when i ran a tank of premium it is because, as i said, the detergents in premium are more prevalant, so it cleaned previous deposits out of your engine. however after that initial benifit, the fuel was not completely burning and began to leave new deposits. PLEASE PLEASE PLEASE research this before you tell people to do potentially harmful things to their vehicles, and dont throw out things that you think as truth because you think it is true. what people read on the internets can cause them to do irreprable damage to their vehicles.
1
16902
Liquid_Ag said:
Did you read Edwin's post on higher octane? Also, I looked for info on it in his FAQ but could not find it. Could you point me to it?
I would really like to know because Edwin's post contradicts yours.
- :
- 2006 Infiniti M
You can, but there are no real benefits, other than the gasoline manufacturers making more money off of you. When you use a fuel with a higher octane rating than your vehicle requires, you can send this unburned fuel into the emissions system. It can also collect in the catalytic converter. When you over stress any system, it can malfunction or not do what it was designed to do properly. In the early 90's, an early warning symptom was a rotten egg smell from the tailpipe. Easy fix, go back to using regular 87 octane gasoline. The rude odor usually disappears after several tanks of gasoline.
from http://theserviceadvisor.com/octane.htm#4
The terrible truth is that in a lot of the smaller vehicles, the use of a higher octane gas can cause trouble since the additives overload the engine and cause the parts to work harder.
from http://www.epinions.com/content_2028642436
the 93 can give a mild performance boost at the cost of the emissions equipment/deposits/etc. My argument is that the pros and cons of using 93 leans more to the cons. our cars are not designed for 93 octane, unless again you have the mp3 ecu, they were designed for 87. you are wasting money and causing buildups. just use 87
from http://theserviceadvisor.com/octane.htm#4
The terrible truth is that in a lot of the smaller vehicles, the use of a higher octane gas can cause trouble since the additives overload the engine and cause the parts to work harder.
from http://www.epinions.com/content_2028642436
the 93 can give a mild performance boost at the cost of the emissions equipment/deposits/etc. My argument is that the pros and cons of using 93 leans more to the cons. our cars are not designed for 93 octane, unless again you have the mp3 ecu, they were designed for 87. you are wasting money and causing buildups. just use 87
Shift2xlr8
Member
- :
- 2002 Protege ES
Liquid_Ag said:
Ok, so I guess I'm just full of s***. Before I turned the screw down, I was filling up on 87 octane every 2days because my gas mileage was s***. So when I turned the screw down I don't fill up but maybe once a week or so. The screw is what increases or decreases pressure in the fuel rail, therefore...by lowering the pressure in the rail you will lower the amount of fuel used....therefore...better gas mileage.
But...I'm a moron and no nothing about my own car, and doing this myself and observing the amount of fuel I use during the day/week and noticing a huge difference, I guess that just makes me a total idiot(enguard)
Chris
- :
- 2006 Infiniti M
http://www.imazda.com/forums/showthread.php?t=3491
read this
http://www.imazda.com/forums/showthread.php?t=600
and this
http://www.mazdas247.com/forum/showpost.php?p=2916546&postcount=3
and this
the way our ecus are set up, they learn around almost anything you do, which is why you can throw a lot of mods at the car and it barely adds any power
read this
http://www.imazda.com/forums/showthread.php?t=600
and this
http://www.mazdas247.com/forum/showpost.php?p=2916546&postcount=3
and this
the way our ecus are set up, they learn around almost anything you do, which is why you can throw a lot of mods at the car and it barely adds any power
Shift2xlr8
Member
- :
- 2002 Protege ES
Ok, if you say so...I'm telling this guy what I personally did, and the gains I personally have seen and saved my wallet from burning into a crisp. So basically I guess it boils down to whether or not he wants to read some s*** on the internet, which you just told him was not always the truth, versus someone who has actually done the screw method and noticed a huge gain....but again...what do I know? I only screwed a screw down and gained better MPG
Chris
Chris
- :
- '04 RX8
LIQUID is right... for once 
I ran mid grade and high grade fuel for a few months and my car performed like crap, idle was bad, it nearly died a few times. The EGR build up was worse.
Ever since I have been using the low octane fuels I have had 0 problems with EGR needing to be cleaned, idle is never crazy, never tries to die, etc.
As far as the EGR goes, as long as you use the proper fuel and revv your engine up every once in awhile you shouldn't ever have carbon build up problems.
I ran mid grade and high grade fuel for a few months and my car performed like crap, idle was bad, it nearly died a few times. The EGR build up was worse.
Ever since I have been using the low octane fuels I have had 0 problems with EGR needing to be cleaned, idle is never crazy, never tries to die, etc.
As far as the EGR goes, as long as you use the proper fuel and revv your engine up every once in awhile you shouldn't ever have carbon build up problems.
TN/KY Tuners said:
If turning that screw did anything then no one would need an RR-FPR or other fuel trickery to add a turbo. But alas we do.
The proteges enginewill measure the mixture via the O2 sensor and readjust to damn near anything you can do and if you do something that it can't compensate for, it will throw a CEL. Been there about 3000 times.
I willing to put money on it that if you take an impartial look at it and run 2 tanks the way you are now and 2 tanks back to normal, there will beno difference.
I just got about 30mpg on my last tank, and just filled up on the way home. I will see what, if anything, happens with my next few tanks. And if your A/F ratio is determined by my O2 sensors then what could my non-fouler be doing to it? Is there any way to adjust that to lean out my car? Im willing to try a few things, for everyone's sake, to try and lean my car out a bit to stop it from running rich and wasting my gas. If my ECU is just gonna keep compensating for everything I do to my car im just gonna have to get a piggyback or something, but is there even a point of doing that to an auto?
Shift2xlr8
Member
- :
- 2002 Protege ES
I say we let Jeg be the one to tell us if what I am saying is bulls*** or not. If he turned the screw the wrong way then it will show a horrible increase, and he will be probably at a half a tank tomorrow. But if he did it right, with the gas tank completely crammed full of gas, he should have been able to drive at least 50-60 miles on the highway and not even drop the needle below the Full mark. I drove back and forth to work (about 20miles each way) twice before the needle really dipped below the Full mark.
Chris
PS - my argument was never whether or not 93 was better than 87 for our cars, so why does everyone keep trying to tell Jeg and I that we are wrong, when we never said it was better. I switched back to 87 from 93 because of a couple reasons, price and I get better gas mileage with 87.
Chris
PS - my argument was never whether or not 93 was better than 87 for our cars, so why does everyone keep trying to tell Jeg and I that we are wrong, when we never said it was better. I switched back to 87 from 93 because of a couple reasons, price and I get better gas mileage with 87.
I don't know you or your back ground. So I'm not going to try and say you don't know anything. But what I do know is that I had my pro for 4yrs. I've been a daily poster on here sense. I also know that these guys know what the hell they are talking about when it comes to the protege. Like you I didn't believe them at first. I've been a V8 guy and an ASE mechanic for yrs. But this was the first import that I've ever played with. It took about a yr to find out that when it comes to ECU 02 sensors and MAZDAS things are just WAY different. They are not always right, but if I had to bet on a side would take theirs. But don't let them know that, they might think I respect them or something! After 4 yrs of messing around with this car I've learned quite abit about it, and well I just don't see that screw doing anything. But like I said, you can always learn something.TN/KY Tuners said:
Shift2xlr8
Member
- :
- 2002 Protege ES
I am not saying they are wrong, Im sure the O2 sensor and ECU are just what they are telling me. What I am posting and saying is what I have personally witnessed. And my room mate can vouch for it because she is the one that sets aside money for gas and in the last 3-4months she has not had to give me as much for gas. When I first put my header on my CEL came on and I was running richer than a stuck pig, but now that I turned that screw down I have got amazing gas mileage. Honestly, I am growing tired of reading the same thing over and over again from these guys, yes I'm sure they do know what they are talking about, but I am just posting what I know as a fact for MY car. I'm not saying that every car is going to react the same way...I am posting how MY car reacted to the screw and the gains of gas mileage I have received from it. I didn't say anywhere in any post that these guys didn't know what they were saying or that they were wrong.
Chris
Chris
Last edited:
