As a disclaimer, I'm not a tuner so take this with a grain of salt... If your timing is low up top and your WGDC is 100% all the time, you're tapping out. On a related note, knock sensors can be made less sensitive to knock, which would look great on paper.
"If timing is low up top and WGDC is 100% you are tapping out."
You are right, you aren't a tuner. You also have no experience with the X-37, and you also have a vendetta so anything you say about the turbo should be taken with more than a grain of salt, maybe this would be more fitting.
So, if timing is low, and WGDC is 100%... well let's have a look.
This is from Daniel Newman's car, which features a X-37, 93oct, and my actuator.
So 35% WGDC left on the table, and timing looks pretty decent. I mean I could crank up timing more up top as it is low load and would take it, however there would be no point.
Your definition of "tapped out" is so ambiguous it's ridiculous. You have to know what one's setup consists of in order to make such a claim. I could put a 25psi wastegate actuator on a turbo, and have 0% wgdc and according to your definition of tapped out I would have MILES of room left. You know, the turbo might not be efficient at those boost levels I could achieve with sub 20% WGDC with a 25psi actuator, but at least I won't be tapped out. [/sarcasm]
BTW, the factory map sensors are tapped out before the turbo is. I have ran this turbo up to 29psi in testing and it was still making power and held airflow mass. Airflow mass is inferred so that is something you should take with a grain of salt, it gives you some data but doesn't paint a full picture. By no way I'm I saying this is what one should do. This turbo has a limit of about 300whp, and it has taken about 27psi to get there. The efficiency range of this turbo is about 25psi, which nets 265-280whp depending on the fuel and configuration.
As far as your comment on knock sensors, 100% of my tunes are at 9.8 multiplier. This .2% reduction from the standard 10.00 multiplier is to account for rear motor mounts that can induce false knock. A far cry from the other calibrators that I have had conversations with that reduce as far as 8.0 which is just silly. There are ways to determine false knock with actual knock, so the person doing the tuning should know these tricks before making any changes to the multiplier or the amount of timing that can be reduced.
Regarding airflow, again this is inferred. However 30lb/min = 300whp in the age old rule of thumb. This is from the same car above, this is 30lb/min at 25psi.
I have tuned the following setups (multiples of each)
ATP - ALL, including GT and GTX.
GT2554R in a DHM quickspool configuration (Stephen)
GT2560R in a DHM quickspool configuration (Tim)
GT2860R in a DHM quickspool configuration (Jonathan)
Billet GT2860R (Custom compressor wheel, not a GTX) in a DHM quickspool configuration. (RAAMaudio)
Cyborg in both included IWG, EWG, and with my actuator.
Peron EFR Turbo Kit
Pumaspeed GT kit
Custom Volvo 19T with Billet Comp wheel upgrade
I should be the one making claims and giving data about all the different turbo's available but it really doesn't make sense for me to. I like each one for different things, and I don't give a sub-par tune because I don't like a certain turbo and I don't tell people to not run a certain turbo. Well, ok I lied don't ever run a ATP GTX2867R on a Fiesta. I recommend different turbos based on what the customer is looking to do. If one looking for big power (320whp+) and not concerned with spool, I'm not going to recommend a X-37, it just isn't going to make the power they are looking for. About 85% of my customer base is looking for something to retain the fun factor of the Fiesta. You didn't purchase this car to drive around in a laggy hot hatch, you purchased it because you like the torque, handling, and overall RESPONSE from the vehicle.
However everyone wants more power, and without sacrificing what you initially purchased the car for the X-37 is what I'm going to recommend everytime. I didn't come to the conclusion overnight that this was the best suited turbo for the customer base above, I took the feedback from the many customers I have calibrated that ran other turbo kits on their Fiesta. As a result of my testing, there has been at least 5 people that have purchased the X-37 from me that have switched from another turbo of some sort because they weren't happy.
Anyways, I don't have time to run through this entire thread and make comments on other misinformed post. If anyone has questions about any turbo kit and how it compares to the X-37 please feel free to email me at
info@adamtuned.com. I will give you factual information of what you will get with any combination.
Thank you.