I LOVE my EPL tune for 93 octane. I get 1.2 bar consistantly on the stock gauge. I would highly recommend that tune. Bypass the cat dash lights if you can where you live and run 3" straight exhaust w/o cats. Launch control is fun too, but I don't use that very often. 1st gear is so short. It is loud with straight pipes, but I love to hear my engine roar. I also have 2 gallons of toluene in a full tank of gas so I never have my timing pulled back...ever, even in 110 degree temps in Arizona and stock intercoolers. I'm very happy with my EPL tune, and Tony was very professional. Thanks!

 

Hi,No thats not alot,average..Thats about where most X-50 cars are with a Good tune and Good exhaust on a rear wheel DynoJet.
On the Dyno I have seen some cars get alittle more and some a little less at that level..

 

Don't forget I run 100 octane gas which is standard in Europe. I forget how this equates to USA octane rating. I know there are some differences.

Also does anyone remember what tranny loss is in our cars crank to rwp - 10-15%?

 

We have 93 octane but as you said the ratings are different.

 

Here we go found it:

"In the United States, pump octane is an average of 2 ratings, research octane (RON) and motor octane (MON). If you look at any gas pump in the United States, you will see a yellow sticker that says "octane by R + M / 2" That is the basic formula for an average. These 2 numbers mean different things. You could make an analogy to that of a blood pressure reading (systolic and diastolic). Research Octane number is always higher than Motor Octane number.

In Europe, they only report the RON. You may hear people discussing that in Europe, the octane is higher. Well, that is not exactly true. You see, in Europe, you might find 96 octane at a local gas station. (wow 96, highest we have here is 94). Well, that 96 is equivalent to 92 here in the States."

Bob, The Auto Answer Man

 

What does your overall curve look like? Does your boost build quickly to 3.5k RPM and then drop off quickly too? That's fairly low RPM to be reaching peak boost, especially if it's tapering off quickly too.

For comparison, I get 1.0 bar steady from 3k RPM all the way to redline at 7k RPM. This is at 6-9000 feet on 91 octane with filter, exhaust with 100 cell cats, X50, and various other mods like turbo intake piping.

That's roughly 96 or even 97 octane in the USA, which is a good bit higher than we get! 93 is the standard in the Eastern US while we only get 91 octane in the Western US.

It's crank to AWHP and it varies slightly from car to car, but in general 15% minimum, 16-17% average, and 18% max.

 

A few things I would like to mention.
It is practically impossible to keep oem wgs holding even 1.2 bar constant in 3rd gear let alone 1.3. That's the whole reason for new of after market wgs.
I personally have never seen oem wgs hold that much unless it's very cold outside and that's briefly.
On another note, even if you can hold 1.2 bar the timing is probably stock or merely stock. With that said boost alone does not prove that a euro tune is aggressive or not.
I agree with someone's statement that US tuners are considerably more aggressive Because of the type of driving we do.
If the euro tuners were not conservative they would not be selling 650 crank HP cara with built motors.
They think we are crazy and we think they are hosing the euro clients by selling them 650hp for $65k
Markski

 

HI Mark,,My GIAC tune held 1.2,on dash, BUT that was with the recommended tightening of the waste gate nuts,as GIAC recommended.
Before I tightened them up it would only show slight flashes occasionally of 1.2 on dash..

 

Just to clarify, I see 1.3 bar peak on dash. Not holding 1.3. I hold about 1 bar.

 

[quote=teflon_jones;3647482]What does your overall curve look like? Does your boost build quickly to 3.5k RPM and then drop off quickly too? That's fairly low RPM to be reaching peak boost, especially if it's tapering off quickly too.

I hit 1.3 peak at 3.5 in 5th. Then it drops to 1 bar but holds to redline

For comparison, I get 1.0 bar steady from 3k RPM all the way to redline at 7k RPM. This is at 6-9000 feet on 91 octane with filter, exhaust with 100 cell cats, X50, and various other mods like turbo intake piping.


That's roughly 96 or even 97 octane in the USA, which is a good bit higher than we get! 93 is the standard in the Eastern US while we only get 91 octane in the Western US.


It's crank to AWHP and it varies slightly from car to car, but in general 15% minimum, 16-17% average, and 18% max.

I know bloody iPad I am fed up of apple autocorrect. Rwp? Ha ha ha. I meant whp. Thanks for this info.

 

My friend's X50 with Techart flash (1.2bar), Techart Race exhaust, Turbo inlet pipes and wastegates showed 570 hp and 808 nm on Techart Dyno in Germany. These are crank numbers of course.

 

I guess this is about right. My x-50 flash exhaust and filter should net me about 520-530 bhp crank. Tuners are selling it's more but I tend to be more conservative about such claims.

 

I have Gemballa flash, gemballa exhaust and evoms intake which should put me at somewhere around 500 hp and 700 nm (crank) in my K16 Turbo car and the X50 with basically same mods as my car is waaaay faster at higher speeds, not even that close anymore. 530 hp GTR (the first one with LEDs in front bumper) has no chance against it either.

 

The car still has the original clutch and just went over 35000 miles. It is holding strong for now but I'm ready to upgrade when necessary. If I do go with a turbo upgrade that will definitely be the time I do the clutch also.

 

Whats your peak "max" bar pressure you see on the dash?