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Showing results 121 to 150 of 178
Search took 0.01 seconds; generated 99 minute(s) ago. Search: Posts Made By: arghx7
Forum: Engine, Exhaust, Transmission 04-11-2013, 01:00 PM
Replies: 32
Views: 7,122
Posted By arghx7
aaaaaand that's why actual flex fuel cars have an...

aaaaaand that's why actual flex fuel cars have an ethanol sensor or a software model to determine ethanol content
Forum: Engine, Exhaust, Transmission 04-11-2013, 12:59 PM
Replies: 29
Views: 5,094
Posted By arghx7
Oh I got mixed up. I thought OP had the system...

Oh I got mixed up. I thought OP had the system too lean code. Turns out it must have been an EVAP code.
Forum: Engine, Exhaust, Transmission 04-08-2013, 06:11 PM
Replies: 16
Views: 5,334
Posted By arghx7
There is a non-linear relationship between...

There is a non-linear relationship between ethanol % and effective knock resistance. That in and of itself creates a safety margin. Basically, for purposes of this application the ~E50 up through...
Forum: Engine, Exhaust, Transmission 03-24-2013, 10:30 AM
Replies: 15
Views: 9,274
Posted By arghx7
I'm unfamiliar with Torque (I use PC software...

I'm unfamiliar with Torque (I use PC software called OBDWiz, which has its own set of advantages and disadvantages). I don't know all the little options for the app. Having the GPS data is a nice...
Forum: Engine, Exhaust, Transmission 03-23-2013, 09:20 AM
Replies: 15
Views: 9,274
Posted By arghx7
Can torque pro export data to .csv or Excel...

Can torque pro export data to .csv or Excel format? I'd like to see some of your raw data.

Also, for comparison purposes most people use the metric unit for airflow... grams/second .
Forum: Engine, Exhaust, Transmission 03-09-2013, 09:24 AM
Replies: 16
Views: 5,633
Posted By arghx7
not to be a ****, but you're paying somebody else...

not to be a ****, but you're paying somebody else to tune your naturally aspirated car. You're not really tuning anything, just following some instructions.
Forum: Engine, Exhaust, Transmission 02-13-2013, 12:29 PM
Replies: 72
Views: 230,655
Posted By arghx7
It does correlate with the chart from the service...

It does correlate with the chart from the service manual in post #22 of this thread.

There's not enough time for multiple direct injections at high rpm though. Even BMW goes to single injection...
Forum: Forced Induction 01-14-2013, 11:37 AM
Replies: 88
Views: 32,418
Posted By arghx7
cool story bro. you realize that they replaced...

cool story bro. you realize that they replaced the 4.2 with a blown 3.0 right?
Forum: Engine, Exhaust, Transmission 01-11-2013, 01:58 PM
Replies: 46
Views: 15,751
Posted By arghx7
Retarding ignition timing lowers cylinder...

Retarding ignition timing lowers cylinder pressure. It changes the combustion phasing. Here are some representative indicator diagrams which help illustrate the concept. I'll have to see if I can...
Forum: Engine, Exhaust, Transmission 01-06-2013, 01:06 AM
Replies: 17
Views: 10,615
Posted By arghx7
A large amount (relatively speaking) of unburned...

A large amount (relatively speaking) of unburned HC passes through the exhaust during cold starts. This is because the catalytic converter hasn't started working efficiently yet. Also, direct...
Forum: Software Tuning 12-28-2012, 02:27 PM
Replies: 246
Views: 86,677
Posted By arghx7
I've tuned a lot of cars and I can tell you that...

I've tuned a lot of cars and I can tell you that this is only half-true. It applies more for vehicles with very basic modifications. When you buy a tune, you are often buying a service and...
Forum: Forced Induction 12-24-2012, 01:32 PM
Replies: 88
Views: 32,418
Posted By arghx7
Basically, OP is looking for Subaru to offer the...

Basically, OP is looking for Subaru to offer the new turbo 2.0 liter engine in this car

http://www.subaru.jp/legacy/dit/performance/images/pict02.gif
Forum: Engine, Exhaust, Transmission 12-20-2012, 05:13 AM
Replies: 872
Views: 627,025
Posted By arghx7
http://en.wikipedia.org/wiki/OBD-II_PIDs Just...

http://en.wikipedia.org/wiki/OBD-II_PIDs Just realized that WikiPedia has a decent list of the legislated PIDs. It's not fully up-to-date, but it has most of the stuff you'd want for this...
Forum: Engine, Exhaust, Transmission 12-04-2012, 06:24 PM
Replies: 22
Views: 6,514
Posted By arghx7
If the airflow reading is skewed in particular...

If the airflow reading is skewed in particular conditions, that propagates through a bunch of other calculations. These calculations include fuel trims and engine load used for enrichment...
Forum: Engine, Exhaust, Transmission 12-04-2012, 05:18 PM
Replies: 872
Views: 627,025
Posted By arghx7
I think there's some confusion going on here. ...

I think there's some confusion going on here.

You're getting different types of information mixed up. For our purposes, I'll break them up into 4 categories.

1) Universal OBD II diagnostic...
Forum: Engine, Exhaust, Transmission 12-04-2012, 04:56 PM
Replies: 22
Views: 6,514
Posted By arghx7
The current MPG calculation relies on the MAF...

The current MPG calculation relies on the MAF calibration and fuel trims. You changed the hardware, so the mpg calculation can't be fully trusted.
Forum: Engine, Exhaust, Transmission 11-09-2012, 06:00 PM
Replies: 41
Views: 10,863
Posted By arghx7
The burden of proof is on people claiming that...

The burden of proof is on people claiming that the fuel system will degrade at the same rate with E85 as with E10. That's a huge assumption right there. The people loudly claiming that E85 will...
Forum: Engine, Exhaust, Transmission 10-28-2012, 12:24 AM
Replies: 44
Views: 15,014
Posted By arghx7
What is your definition of a knock off? I mean...

What is your definition of a knock off? I mean this is almost a philosophical question.

If somebody is copying many aspects of somebody's design, but uses different materials or processes to make...
Forum: Forced Induction 10-26-2012, 11:29 PM
Replies: 74
Views: 50,104
Posted By arghx7
One thing that's missing from this discussion...

One thing that's missing from this discussion about knock suppression is intake port design and head cooling. There is a trade off between charge motion (tumble, swirl) and port flow capability. ...
Forum: Forced Induction 10-26-2012, 10:00 PM
Replies: 74
Views: 50,104
Posted By arghx7
Ehhh there's a lot that influences a turbo's...

Ehhh there's a lot that influences a turbo's spool. All things held equal, raising compression actually decreases exhaust enthalpy (exhaust potential energy) but when you change compression you tend...
Forum: Engine, Exhaust, Transmission 10-22-2012, 09:12 PM
Replies: 35
Views: 7,928
Posted By arghx7
http://www.ft86club.com/forums/attachment.php?atta...

http://www.ft86club.com/forums/attachment.php?attachmentid=18280&stc=1&d=1350951148
Forum: Software Tuning 10-22-2012, 01:27 PM
Replies: 20
Views: 15,001
Posted By arghx7
The downside is that there has been ZERO...

The downside is that there has been ZERO DURABILITY TESTING ON E85. NONE. A few people have been driving around for a couple months with it. I guess to most people on here, if it doesn't break...
Forum: Engine, Exhaust, Transmission 08-30-2012, 11:40 PM
Replies: 36
Views: 11,971
Posted By arghx7
There's zero long-term durability testing...

There's zero long-term durability testing information available for the fuel system. We have no idea whether the high pressure fuel pump or direct injectors will hold up. They might, they might...
Forum: Engine, Exhaust, Transmission 07-30-2012, 11:53 PM
Replies: 41
Views: 21,357
Posted By arghx7
Whoa, whoa... you guys realize there are millions...

Whoa, whoa... you guys realize there are millions of cars with aluminum exhaust components including turbo engines?



This is a theory that makes sense at first glance, but when you look at real...
Forum: Engine, Exhaust, Transmission 07-20-2012, 09:06 PM
Replies: 72
Views: 230,655
Posted By arghx7
I think it's definitely been confirmed that...

I think it's definitely been confirmed that simultaneous injection is occurring over 5000rpm under WOT conditions. This was in the service manual and has been logged with ECUtek.

This is a...
Forum: Engine, Exhaust, Transmission 07-18-2012, 01:55 PM
Replies: 72
Views: 230,655
Posted By arghx7
I'll admit I'm still not completely clear on...

I'll admit I'm still not completely clear on this. Are you referring to actual degrees relative to TDC compression? Or are you basing your calculations on the missing teeth from the crank angle...
Forum: Engine, Exhaust, Transmission 07-13-2012, 12:29 AM
Replies: 46
Views: 13,363
Posted By arghx7
my concern is that the stock pipe, which is...

my concern is that the stock pipe, which is basically plastic, should run cooler than aluminum.
Forum: Engine, Exhaust, Transmission 07-11-2012, 07:06 AM
Replies: 50
Views: 43,201
Posted By arghx7
In a situation like this you want to run as much...

In a situation like this you want to run as much of the total fuel mass through the DI injectors as you can. This has to be within the hardware constraints (injector flow rate, fuel pressure...
Forum: Software Tuning 07-10-2012, 07:55 PM
Replies: 302
Views: 129,557
Posted By arghx7
You don't have the resources to do a direct...

You don't have the resources to do a direct injector durability study.
Forum: Forced Induction 07-08-2012, 03:35 PM
Replies: 34
Views: 19,137
Posted By arghx7
Ethanol is slightly better. The key is the spark...

Ethanol is slightly better. The key is the spark plugs and the richness of the mixture...
Showing results 121 to 150 of 178
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