@SomeGuy you do compression test lately? Come and join the fail boat. Haha
@SomeGuy you do compression test lately? Come and join the fail boat. Haha
- 2021 Porsche Macan GTS -
- 2016 Lexus NX200t F Sport -
- 2010 Mazdaspeed 3 Black Mica - SOLD -
So I put the stage 1 93 map just to do another log while I still have 94 octane on the car and this is what i got
datalog6.csv
![]()
Post the log that goes along with that plot...we're still worried about your fuel pressure.
Also, just for consistency sake, make sure if you compare two logs that they're on that exact same road in the exact same direction...the road you log on can play a big roll in the resulting numbers and you won't be able to do a true comparison.
Also, I'm putting the stage 0 map now just to be safe
Oops missed that....you had one spot in the log below 1600 again.
The real question is why is your fuel pump having such a hard time
What mods do you have?
So you should not be having fuel pressure issues
It also may just be momentary dips...
Driving normally is nothing
If you stay out of WOT you'd be fine...heck, even if you do go WOT the dips you're seeing aren't hurting your AFR's. Stage 0 until fuel pump is the safe bet though.
He is also running a stage 1 map though which even on stock intake/exhaust does try to push things a little more. He's not actually having issues yet because his AFR's don't drop, it should go rich when fuel pressure dips too low on a genpu. The suggestion of targetting slightly higher fuel pressure might help. Take all the 1669's or whatever the stage 1 OTS pressure is and make them 1700's or something.
I send you an e-hug.
If I ever visit friends in KW (I went to school there) I'll give you a shout.
@paulabreu
I didn't get fuel pump issues until I installed a TMIC and when the weather started to get cold. That blip may just be a one-off.
SomeGuy (08-01-2014)
DamagedGoods (08-10-2014)
^^ ROFL.
"There is no path to happiness: Happiness is the path " ~Buddha
"And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna
"There is nothing noble in being superior to your fellow man: true nobility is being superior to your former self" -Ernest Hemingway
SomeGuy's statement isn't so far fetched.
Assuming 94 octane gas is 10% ethanol, due to the ethanol, it has a slightly less Energy Content than 91 (assuming 91 is either straight gas or less than 10% ethanol). we're talking energy content, not octane.
i hate quoting Wikipedia but it is the quickest summary of info:
Ethanol contains approx. 34% less energy per unit volume than gasoline, and therefore in theory, burning pure ethanol in a vehicle reduces miles per US gallon 34%, given the same fuel economy, compared to burning pure gasoline....
For E10 (10% ethanol and 90% gasoline), the effect is small (~3%) when compared to conventional gasoline,[56] and even smaller (1–2%) when compared to oxygenated and reformulated blends.[57]
You use slightly more 94 (assuming E10 or greater) than 91 (assuming 0 <= Ethanol < 10%) in terms of fuel consumption ... which is also why people have reported better fuel economy with Shell 91 (which has, or used to have depending on the gas station, zero ethanol content) vs. Ultra 94... but the difference is minor.
greyseason (08-10-2014)
Does Esso's new 93 have zero ethanol?
Thanks for explaining for me, but this is essentially where it comes from...by adding stuff to make the fuel get 94 octane (ethanol or whatever) it decreases overall energy content.
That would be interesting to see. I wonder if it has the same knock resistance as 94 (or close).
So I pulled 2 more logs tonight
datalog14.csv
datalog15.csv
I have installed the following mods since the last log I posted:
Corksport Stage II TIP + SRI
Ultimate Racing turbo back exhaust ( downpipe high flow cat, and test pipe )
Currently using Cobb OTS Stage2+SF+TIH 93
I suppose we all have to start somewhere...smidge of knock, nothing to worry about. AFR's and fuel pressure look good, WGDC isn't too high so there is room to get your boost up still. Lots of airflow might mean your MAF cal is a bit off, given your boost/power levels I wouldn't expect you to flow 290+ g/s.
![]()
paulabreu (09-23-2014)
Did another log tonight after installing a CP-E TMIC
datalog1.csv
Looks good. Nothing out of the ordinary...what map are you running? wondering since you are hitting ~20 psi of boost for a brief period of time
Last edited by mickey_g; 10-08-2014 at 11:38 PM.