Ad: VTT GC's vs. "competitor x" back to back dyno (same tune)

[Chris@VargasTurboTech]

A local customer stopped by a couple of weeks ago to inquire about swapping out his 4th set of high flow turbos from "competitor x" for a set of GC's.

You may ask why swap from perfectly good functioning turbos to new ones? We were told this was the customer's 4th set of "reliable" offerings, he got told no warranty if he posted about the failures (same story and treatment on sets 1-3) so he eventually decided to just pull #4 before they failed, and here we are with shiny new GC's on his car.

He dropped it off for the install, and before we started the work we threw it on the dyno for a baseline. No tune changes. This is a true apples to apples no tune change comparison, and really shows the difference between stock frame turbos and the GC's.

We strapped it down and ran it. Swapped the turbos for the GC's performed some maintenance items, put it back on the dyno and ran it again. Here are the results:

Dyno Comparison:

Car Specs:
2008 N54
6AT
Silicone inlets
VTT GC's
GC aluminum outlet
PI
MHD Flash
JB4
Exhaust of some brand, no idea which

 

[The Convert]

What do you mean by “performed some maintenance items” and were the other VTT items already on the car, or were they added at the same time?

 

[Asbjorn]

List of irellevant maintenance done
- Solved super minor (≤1bar) boost leak
- Tiny replacement of old vanos with slightly never used one
- Solved small issue related to PI not spraying at all before
- Downgraded from two old boost solenoids to working type

 

[Asbjorn]

But seriously, super curious about this performance gain. What did you do to achieve gains in both spool and top end?

 

[Chris@VargasTurboTech]

What do you mean by “performed some maintenance items” and were the other VTT items already on the car, or were they added at the same time?

Gaskets changed for oil leaks, new turbo install kit, just basic stuff. The guy has the car already set up well for power, but as typical with these cars. They leave the stuff that needs attention. We suggested much more work when the subframe was out. Oil pan gasket, water pump T-stat, etc, etc. He declined.

 

[The Convert]

Gaskets changed for oil leaks, new turbo install kit, just basic stuff. The guy has the car already set up well for power, but as typical with these cars. They leave the stuff that needs attention. We suggested much more work when the subframe was out. Oil pan gasket, water pump T-stat, etc, etc. He declined.

Damn. I would have bitten the bullet on those items to not have to pull subframe again. To each their own I guess.

 

[nyt]

List of irellevant maintenance done
- Solved super minor (≤1bar) boost leak
- Tiny replacement of old vanos with slightly never used one
- Solved small issue related to PI not spraying at all before
- Downgraded from two old boost solenoids to working type

- set JB4 to higher boost map

 

[Chris@VargasTurboTech]

- set JB4 to higher boost map

Don't forget nitrous.

I mean... what? haha

 

[Chris@VargasTurboTech]

Damn. I would have bitten the bullet on those items to not have to pull subframe again. To each their own I guess.

Me too, and not as an employee, just in general. Once you've been with this platform for a while, you see maintenance that needs to be done and just say... FINNNNEEEEE, and commence with thinning out the wallet, normally because it's preferable to NOT doing that stuff and seriously thinning the wallet out down the street. Speaking of that, it's time on my own car to pay the piper... ugh. FINNNEEEEE

 

[nyt]

Don't forget nitrous.

I mean... what? haha

 

[Terry@BMS]

lol

 

[TheFixer]

You guys have a good product and great customer service. A lot better than most. I'm impressed.

I'm curious about what turbos that guy was running. I saw something on another forum about a guy who went through 3 or 4 sets. They were MMP. They probably are the worst company I have read about that sells turbos with the most failures and has the crappiest customer service.