Orangeblood

<ul><li><a href="http://www.eurocodetuning.com">http://www.eurocodetuning.com</a</li></ul>

Shiloh

There is a website about the tip shift point issue. My tip car actualled shifted at 7000 RPM when I bought it. After the 5k maintainence, the shift points were all reduced. Mine shifts at 6300 RPM when going from 1-2 and at 6800 RPM when going from 2-3.<ul><li><a href="http://www.auditipissues.com/">http://www.auditipissues.com/</a</li></ul>

Shiloh

If you want to make generalizations about how much each mod contributes to perform, then you cannot use different cars to make the comparisons. Each car is a little different. If you dyno four brand new B6S4 cars, you will four similar but not identical dyno results. Mods will often add less power than the variance in power of stock cars, so you will never know if the mods added power or if one car was simply faster from the start. And mileage makes a huge difference as well. My car has gotten a lot faster as the miles have broken it in. I'm past 10,000 miles and it is a road rocket compared to when it was new. If you take four identical B6S4 cars, the one with the highest milage should always dyno the best.

MachtigAvant (v3.0)

Disclaimer: These are my thoughts.


Well, props for taking the time to take your car to the dyno and compare it with a stock car. I think that's a great step.

Looking at the data, it seems that you definitely do have an increase in power over stock. Now, how much of it is related to REVO and how much of it is related to the exhaust, we can't really tell, but the gain is there.

Now, I'm much more familiar with manuals, but I'll give the tips a stab.

I can definitely see a few good things. Granted, this is me going off your dyno logs.

Sure, the numbers are lower than the manuals, but that makes sense since your running a tip.

<img src="http://www.crazyz06.com/images/joe_stock_vs_ara.jpg">

You have some decent gains in torque over stock right at the peak torque range. You can see you have a nice gain of about 10 foot pounds over stock from 2500-3500. Peak torque is right on-par with most of the data that I have seen, with the peak torque number right before or at 3500 rpms.

I can see that you have a nice increase in power at the 4200 mark, like most of the software and stage iii setups are seeing. Also, you have the flatness after 5k, which is the intake tract change.

Now I would like to go into comparing your data with my data, but one is a dynojet and the other is a dynapack. ALSO, I have a manual and you have a tip. But, here it goes....

Your max HP is most likely right where you ended your run. Sure, we have no seen data on YOUR particular car past that point, but from what I have seen on multiple cars, and including cars on dynojets, we have reached our MAX peak HP at 6500 rpms. The HP then trails to redline or rev limiter. Basically, you would keep the 260-265 mark after the peak HP of 267-268.

Looking at the HP curve, you can see an improvement in power at the torque peak point (3500 rpms), again at 4300 (typical) and a nice steady increase over stock past the intake tract change.

Now for the most interesting part of the discussion: software vs exhaust. What is doing what?

I would attribute the overall gain over stock to the exhaust. The fact that the line is steady, jsut higher than stock is a good thing. That means that 1) you are getting gains, with no loss under stock, which is a good thing, and 2) the software is doing it's job.

What we saw with the AmD car is that the software was not running right. Even with the exhaust, the engine was just not tuned properly with the software. The fact that the car has an increase over stock means that the exhaust is doing it's job and the software is not causing it to LOSE power.

Now, where does the software give increase over exhaust? I would argue that the peaks at 3300-3400, the peak at 4400. I don't see the software really doing much for HP on this graph. I see the exhaust helping the flow and ultimately giving you a nearly identical graph to stock, just higher. Which is a good thing!!! That means the software is not taking away any power.

It's a tip. Your going to see lower power numbers than stock. But I'd say that you have a pretty quick car, especially for 91 octane. Hope your happy with the results!

Damon

read sig.

ToastR

I notice this also, but I wonder if the tach needle gets a certain amount of "momentum" swinging around fast and goes closer to 7000 when the car is really being caned hard. My 1-2 shift occurs at 6600-6700 when I slowly rev the engine to the shift point, but the needle goes all the way to 7000 when I am flooring it to the shift point. How do you determine your rpm shift points is it under hard or gentle accel?

YellowZ06

Look at the Dyno and see where the RPM stops...

MachtigAvant (v3.0)

then we are, those of us with cats.

All the dyno plots I've seen make the most HP at 6500, with a drop from there-on. By no means a HUGE loss in power, I see the peak is at 6500 for most setups.

You may be different with the no-cat-flow, but I have yet to see a dyno plot with just the pipes? BTW, I'd LOVE to see one. ;-)

YellowZ06

but don't MT average around 260 hp stock? that's why the Tip dynoed before the Revo flash. So I'm guessing not much more loss than the MT

MachtigAvant (v3.0)

I can't remember seeing a stock-stock dyno from a roller. I've seen with intake, with revo, but I can't remember seeing a STOCK car on a roller. Maybe somebody will post one up.