do you have a dyno chart for this? Interested - thanks

 

those are some nice numbers, I am really liking this turbo setup

by the way +1 on the graphs, I am very interested in seeing how the turbo behaves

 

Here is an average pull on the BBK to a pull on the stock turbo, at very similar boost levels,

we made more power, but it was running more boost, this is to show a closer boost comparison!!



cheers

CB

 

Wow so that's 30whp and 40wtq difference without pushing it?

 

Nice Chad, can't wait to order mine soon.

 

Yay data! More please! More!!!

 

I am not happy with how pathetically wavy my tune was that day on the BBX LOL LOL LOL!!!

I just looked at it this morning and went, thats awful lol!!

I never raised the torque limiters on that tune ( i had converted to OS from Cobb) because I was rushed, and I think I could have made some corrections for more power and a smoother plot.

CB

 

Chad,

In post 256 did you mean BBX compared to the stock turbo? A quick ninja edit may prevent any confusion. Looks good Chad. Thanks for sticking with this thread and providing updates and information to the community.

 

That's not necessarily a good comparison. IIRC, the Garrett has a larger wastegate port translating into more force on the wastegate valve. Also depends on which actuator you're using the how much preload is set. Assuming the actuator and preload are the same, the fact that the wastegate ports are different sizes is still a major variable.

 

the garret required almost 85% on our car to hold 28 psi.... therefor it was trying pretty hard to make that boost (even with our actuator on it )

the hotside of the garret, in my opinion is designed wrong, thats one of the flaws we found, it basically directs the gas path DIRECTLY at the WG port... which causes issues (like flapper arms bending) etc...

we were an official tester for the Garrett turbo, and I held off on our own stuff because I hoped it would be a great turbo.... It didn't turn out to be, which kind of sucks....

I love their products and we use their parts for every ball bearing turbo we use, but the evo X turbo didn't do what we had hoped!!

the comment was simply that this turbo holds boost easier... and it does.


cb

 

I also noticed the boost being directed at the WG on the GT3076r too much so next time I'm in there I'll get even more aggressive with the portwork to direct the main flow towards the wheels better.

 

Sure it's a good comparison, the Garrett bolt-on makes crap for power and likes to self destruct. Doesn't matter the design of the wastegate port, it fails, so the design is a failure. So far the BBK on E85 has made more than a test Garrett, at less boost and less octane. Even the Dom 2.0 has made more power than any Garrett bolt-on through our shop, time and time again.

Nobody uses the Garrett bolt-on because it is a failed product. How often do you actually hear about that product anymore?

Just my 2 cents.

- Bryan

 

I was referring specifically to the wastegate duty cycle vs. boost pressure. Go check my 'quoted' section again. I only quoted the '6psi difference for same duty cycle'. And everything I said was correct. I did not speak to the performance of the turbo in any other regards.

Now, as the BBX does have a larger compressor wheel, this does make some sense as to an explanation. But, for the very limited info Chad said in his post, it's not adequate information.

Now, as for why you don't hear much about it, didn't they stop selling it after the discovery of the problem? ATP's dyno on E85 looks pretty stout to me....

 

That was after the first turbo on that car blew up on our dyno, and they set their dynojet to match our mustang for a internet "white paper" after it came off our rollers so take those results with a grain of salt.

Anyway, it's a failed product in my mind and I won't recommend it to any customers. There are much better proven turbos out now for the 10. Garrett makes great turbos, unfortunately that wasn't one of them.

- Bryan

 

a little addition to the BBX on our shop car

more pics to come!

cb