Ok, I am not here to bash Vince, Trifecta, the infiniboost tune, or to promote myself, HPT, or anything else. THIS IS SIMPLY A COMPARISON. Please keep **** talk out of here.

So, tonight I got the opportunity to data log a Trifecta Infiniboost tune's SS. I must say, its a quick tune. Seems great for the money, and seems overly safe. Now, this tune is on a completely stock car, except the tune, and i am comparing it to my car, which is completely stock, except the HPT tune that I wrote for it.

Now, Looking at it from the top, it looked very good. But as I got it home and started to compare it to my HPT tune, I realized that it was a bit messed up. First, stock timing is being run. I understand its MUCH safer, but still. Second, the MAF lbs/min looked EXCELLENT coming in at a little over 32 lbs/min. BUT, the VE airflow was a measly 25 lbs/min. Also, the MAP is only showing a max of 237kpa, and most of it is much MUCH lower than that (like 210-220kpa). This is all pushing 26 psi of boost.

As a comparison, my tune is pushing 31lbs/min on the MAF, and the VE airflow is pretty steady at 27. My MAP stays VERY steady at 240kpa. And all I am tuned to is 21 psi.

So, all I want to say are here are the numbers and facts. Take from it what you want.

 

Nice comparison.

There are somethings to keep in mind based on what we know about the "infiniboost" tune:

The OS is rewritten to accomodate the higher boost, so some sensors (namely the MAP) may not be reading correctly when logged with HPT. That 237kPa may will need a fudge factor to display the correct value. After all, we know 26 PSI boost is about 280 kPa absolute, so either the HPT PID or the PSIG is not correct.

Also, because the OS is changed, calculated values like "VE airflow" may also be skewed. Vince or someone @ trifecta could verify this, but I would be skeptical of this calculated value on his OS.


One quick edit: Did you happen to log IAT/IAT2 with both tunes? I would bet big $$ the 26PSI tune is generating mad heat on stock hardware. I've found in testing on my solstice that the air heats up considerably on more than stock boost (as expected).

Excessively high IAT2 may affect the calculation of VE airflow (it did for me with respect to before/after HRC intercooler install)

 

good job on comparing numbers.

 

I was going to write about this in the lnf performance section but since someone already started the subject ill post my question here. I have hpt has anyone been able to up the boost wiether it be with a boost controller or hpt itself.

 

Thanks guys, I did forget to mention the IATs. On my car (HPT tune, 21 psi), doing a 1-3rd gear pull (to about 110 mph), I went from 77* on IAT 1 and 2 to 77/104. On the Infiniboost tune, it went from 131* (IAT 1 at idle) and IAT 2 of 104* to 97/118 (106 mph). This confuses me. The guy was running his car in the staging lane... dummy... so I guess that would account for the majorly high IAT 1 at idle. Ambient was pretty much the same both days too.

20redline... I will be tuning with a boost controller soon. I only intend to run about 24 psi, see if I notice any gains, and if not, I will scrap the idea. I know I am an otherwise stock car, so the flow might not be any better with the controller on it.

Thanks guys, I did forget to mention the IATs. On my car (HPT tune, 21 psi), doing a 1-3rd gear pull (to about 110 mph), I went from 77* on IAT 1 and 2 to 77/104. On the Infiniboost tune, it went from 131* (IAT 1 at idle) and IAT 2 of 104* to 97/118 (106 mph). This confuses me. The guy was running his car in the staging lane... dummy... so I guess that would account for the majorly high IAT 1 at idle. Ambient was pretty much the same both days too.

20redline... I will be tuning with a boost controller soon. I only intend to run about 24 psi, see if I notice any gains, and if not, I will scrap the idea. I know I am an otherwise stock car, so the flow might not be any better with the controller on it.

 

Post this on www. chevycobaltforum .com because the majority of the people over there worship him like his tunes are sent straight from the heavens.

 

I'm not a member there, but feel free to post it there. I would love to see some of the replies.

Not that I have anything against Vince and his tunes, I think they are great for the budget minded, but they are definitely not the end all cure all to tuning for the Cobalts.

 

I am currently permanently banned by my IP address at that forum

 

Did you race the two cars? What was the result?

Just curious.

 

Smooth! Time to get a new IP? Lol!

As for racing it, no, we didn't go head to head as I didn't have my car there that night. To be honest. The guy driving this car would have lost the race. He is still learning, ALOT! As for how hard I think it pulls... yeah, it pulls hard, but I really don't think it pulls as hard as my car. Now, I have a whole lot of hours invested in tuning my car, its a very customized tune to fit my car as well as it possibly can. The Trifecta tune would be alot better if we could spend time tweaking it too. It kinda sucks that Vince changed the OS (for obvious reasons, I know) cuz it would be sweet to see what this tune could do if it were more custom.

As for our cars... i checked the 60-100 times through my data logger, and his was nearly .75 seconds slower than mine in that section. So, no, it seems as if it is not as fast, but yes, it is a dang quick tune.

Another thing to remember is, he was running 26 psi. This is borderline torture for the turbo. I was running 21 psi, which IMO is a very safe spot for the turbo.

 

BIGGEST factor IMO.
I'm hoping vinces tune doesn't start crapping out turbos

 

I am sure it will. What people don't realize is that Vince is doing this tune for people to run a big turbo setup. Its not meant 100% for the stock turbo, and these people running 30 psi are really just asking for trouble.

 

x2 Thats what ive been trying to tell people but they flip out saying i dont have a clue what im talking about.

 

In their perfect little world you don't. I am not gonna bash on Trifecta. If I had a big turbo, they would be a good contender for tuning. But HPT has the overboost tables unlocked now, so its a pretty even playing field.

Trifecta was still running stock timing, which I don't think is a great idea, and we all know how rich they run.

 

wastegate is coming next for HPTuners and the TC. Should be fun!

 

Yeah, but when?

 

Eventually

 

I'm Trifecta tuned and I'm not running stock timing. Each company is always going to have it's advantages. I just can't see this thread going in a good direction.

 

I don't see this going in a bad direction at all. The more info we get to compare to each other, the more informed decision potential buyers can make.