For All You Haters That Say Intakes & Exhausts Don't Make Power - Dyno Proof

No thanks. Truck is already priced high. I’m glad I didn’t get a hybrid. $4k more dollars, 500lb more, for what?? The gasser is plenty.

From what I’ve seen the dudes that are buying hybrids are boomers that got too much money and don’t need a full size.

 

ahhahahahahahahahhahahh

 

Most chassis dynos don’t measure well at low RPM, if at all. That’s why even on the new run it shows a steep climb above 2000rpm.

 

More usable power, vastly more torque (delivered thousands of rpm sooner), better ergonomics, better suspension, better ride quality, better tech, better transmission, better brakes, bigger tires, quieter interior


not sure why you’re laughing

 

I don't disagree, but the point was that the baseline was significantly below factory spec. While the guy is bragging about how much power his mods made, he should have been wondering why his baseline was so far below factory spec.

 

Probably, but that measured value is still a HUGE gain over other dynos I’ve seen

 

I guess we could ask @runnin4tacos to chime in.

 

I call BS.

Did you know stickers also add 5hp?

 

Ignoring this damning comparison, the entire world knows turbos perform better with more free-flowing exhausts. It's NA they don't do shit on and can make it worse. But no, it's not going to add 70HP on a factory produced engine.

 

A huge gain over what? A bad previous dyno run that was down over 100 lb ft of torque from factory spec?

Best he got was what the truck is already capable of. There were no gains.

 

There are other stock dynos out there

 

Yeah, those torque curves don't jibe with the delivery for your typical small displacement turbo engine. You typically see a sharp jump in torque as you hit boost threshold RPM and then it goes basically flat until the turbo starts to hit capacity and it starts falling off closer to redline.

Here's a VAG 1.8T motor with (I think) the 180hp tune typical of them at the time:


The stock curve from the video looks more like an NA engine's curve does. I'm wondering if they had to play games with the throttle to keep it from kicking down gears or something, since you can only control the maximum gear it'll use rather than directly selecting a gear. I hope it's not that, because that'd mean that the whole graph is meaningless until they were able to mat the throttle.

That said, I'm used to looking at dyno graphs from less technologically complex engines, evident from the fact that the first thing that I thought of was an engine from 2003. That motor has less complex variable cam timing (I think only on the exhaust cam and certainly narrower range), a variable intake with two settings, port injection, and a single path turbocharger.

What I am curious about is what was going on that made it enrich the mix so much earlier with the modifications. It fattens from fairly lean (15:1) to "performance rich" (12:1) at 4400 rather than 5300. I wonder if it's a knock prevention thing. Or, maybe that's something with transitioning from direct to port injection or something?

Either way, I do know the way we find out is by having more folks dyno their trucks. It'll happen more often as the mod scene picks up more.

 

Burger Motorsports was running some tests on the dyno and they specifically said that they could not isolate the trans to do pulls in 4th gear when going full throttle from the start. They had to feather the throttle for a bit on the start and then go full throttle. For this reason they specifically said that the results will vary slightly after repeated pulls using the same tune. They were getting some nice numbers with only intake change.

 

That would make sense and give significant credence to the idea that these aren’t directly comparable at 3000rpm

 

Maybe redo the dyno?

 

of course it will be, they use a engine dyno. there will be drivetrain loss when you stick a truck on a dyno.

OP dont even bother, you could post all the proof in the world and this self degrading forum will continue to hate on its own enthusiast.

 

I can afford 20 stickers!!! 100 hp more! Woohoo!

 

Low RPM, under 2K. By 2K it was full throttle and pulling, so I would think the 3K numbers are pretty good. I would imagine that the ECU may have been a limiting factor for the factory run on the Dyno. Here is the video.

https://www.youtube.com/watch?v=rSNv3203KSE

 

Cognitive dissonance is a bitch.

 

wouldn't know