New Turbo Kit Sneak Peek(Ptuning)

[King Tut]

Originally Posted by jamesm

that spool does seem a bit incredible (impossible?) for such a large turbo. it'll be interesting to see some third-party pulls. it's easy to spool a big turbo on a load dyno. i'm definitely interested to see some road logs of map/rpm/load. i'd bet that without artificial load the spool looks more like a gt30 on a 2.0l normally does. then again my 28 spools way quicker than i expected too, so maybe it's just the fa20 kicking ass... who knows?

Nailed it.

[ptuning]

Originally Posted by bfrank1972

I made mention of that hump a while back but got no response - I'm curious as well to why the curve looks that way.

You guys are looking too much into the teeny tiny humps. I can assure you that you will never ever be able to feel this. Furthermore, it was mentioned that this is the latest revision. We're still working on final base map.

Lastly, I think people are too accustomed to seeing Dynojet dyno plots. You guys do realize that the software has to apply a mathematical smoothing algorithm to make the graphs not look like waves in the ocean, right? Dyno Dynamics dynos measure actual load throughout the dynopull and plot every single pixel you see on the screen.

[ptuning]

Originally Posted by jamesm

that spool does seem a bit incredible (impossible?) for such a large turbo. it'll be interesting to see some third-party pulls. it's easy to spool a big turbo on a load dyno. i'm definitely interested to see some road logs of map/rpm/load. i'd bet that without artificial load the spool looks more like a gt30 on a 2.0l normally does. then again my 28 spools way quicker than i expected too, so maybe it's just the fa20 kicking ass... who knows?

Out of respect, we refrained from posting up the other FI brands on our dyno plots. Realize though that the other three FI brands tested/tuned on our dyno used the same ramp rate and started at the same 2K rpm. I can guarantee you that there are no smoke and mirrors here guys. One thing PTUNING will NEVER do is post fake dyno information. That's how you get caught with your pants down when the product gets released.

Furthermore, I think some people are getting things mixed up. A Dynojet will give you the best spoolup because it takes time to bring the giant roller up to speed, which helps enhance the boost curve down low. Put a 1.5L CRX with a giant turbo on it and see how long it takes to accelerate the roller from 2K rpm. Kind of like doing a sixth gear pull on the street to log boost. On a really high hp car, it also gives you the advantage of having very little heat soak, since the dynopull may only take a few seconds to complete. Look at a dyno video of 1,000hp Supras and see how long it takes to do the pull once boost hits.

If we log our boost curve on the street under "true" load. The boost will come on a few hundred rpms quicker than on the dyno.

[jamesm]

Originally Posted by ptuning

Out of respect, we refrained from posting up the other FI brands on our dyno plots. Realize though that the other three FI brands tested/tuned on our dyno used the same ramp rate and started at the same 2K rpm. I can guarantee you that there are no smoke and mirrors here guys. One thing PTUNING will NEVER do is post fake dyno information. That's how you get caught with your pants down when the product gets released.

Furthermore, I think some people are getting things mixed up. A Dynojet will give you the best spoolup because it takes time to bring the giant roller up to speed, which helps enhance the boost curve down low. Put a 1.5L CRX with a giant turbo on it and see how long it takes to accelerate the roller from 2K rpm. Kind of like doing a sixth gear pull on the street to log boost. On a really high hp car, it also gives you the advantage of having very little heat soak, since the dynopull may only take a few seconds to complete. Look at a dyno video of 1,000hp Supras and see how long it takes to do the pull once boost hits.

If we log our boost curve on the street under "true" load. The boost will come on a few hundred rpms quicker than on the dyno.

i wasn't meaning to imply that you're trying to deceive people, just stating the obvious that A: this appears to spool incredibly fast and B: you can effect spool greatly by playing with load and ramp rates and what not on a load dyno. i can't wait to see data from actual driving. i'm mainly interested to see the effect of the turbo placement and the exhaust path, if that really does help as much as it seems.

[ptuning]

Originally Posted by jamesm

i wasn't meaning to imply that you're trying to deceive people, just stating the obvious that A: this appears to spool incredibly fast and B: you can effect spool greatly by playing with load and ramp rates and what not on a load dyno. i can't wait to see data from actual driving. i'm mainly interested to see the effect of the turbo placement and the exhaust path, if that really does help as much as it seems.

I apologize if it came off that way, but I certainly did not mean to come across like that. Truth be told, maybe there are others post that I should probably have quoted instead.

BTW, you are correct in assumption. I cannot reiterate it enough. Turbo response is hugely affected by the pressure differential between the turbo and outlet of the turbo. If you can connect your turbo downpipe to the vacuum in space, you will likely have the most ridiculously fast spooling, highest hp setup for a given turbocharger. LOL

Since this is not possible, the next best option is to have the largest, least convoluted, and shortest exhaust path to the exhaust tips. This is the same reason a 3" exhaust system makes so much more power with better spoolup than a 2.5" exhaust system. Can you make 3xx whp at xx boost with a 2.5" exhaust? Sure you probably could, but I'll put money on it that you'll make more power with better boost response with a 3" exhaust at the same boost setting.

[sw20kosh]

Originally Posted by ptuning

Since this is not possible, the next best option is to have the largest, least convoluted, and shortest exhaust path to the exhaust tips. This is the same reason a 3" exhaust system makes so much more power with better spoolup than a 2.5" exhaust system. Can you make 3xx whp at xx boost with a 2.5" exhaust? Sure you probably could, but I'll put money on it that you'll make more power with better boost response with a 3" exhaust at the same boost setting.

It is obvious your combination of parts/engineering/tuning has created an unusually awesome responding large turbo. Your dyno comparison proves that. Can you at least say which size turbo's they were for the 2 other kits you tested?

[SnapOv3st3r]

I haven't read the latest commentary from this thread, but the last couple of post seem to be that there is speculation on the ability that this setup spools. Here is a first hand account video that could give you an indication of the spooling ability of this setup. It's real world driving, not dyno as it seems people think tampering with to somehow show favoritism toward spooling on their setup. You can't tamper with road conditions. Very informative when they get to the ride-a-long.

[ame="http://www.youtube.com/watch?v=_TBi6Qk9tVs&feature=share&list=UUn4pkBDGEO Ov-r49LIRkY1g"]PTuning Trip - YouTube[/ame]

[ptuning]

Originally Posted by sw20kosh

It is obvious your combination of parts/engineering/tuning has created an unusually awesome responding large turbo. Your dyno comparison proves that. Can you at least say which size turbo's they were for the 2 other kits you tested?

I probably shouldn't, but I guess the comparisons would be pointless otherwise. Centri SC, 18G, 57 Trim. We'll just keep other company names out of the posts here though. Thank you.

[MadFRS]

So much f'ing win!!! The attention to detail in the kit and the attention to detail in the forum responses and information given to the community is top notch!

Motivation to pay off the car so I can drop it off at PTUNING is in the video. That sound is glorious.

[SnapOv3st3r]

Originally Posted by MadFRS

So much f'ing win!!! The attention to detail in the kit and the attention to detail in the forum responses and information given to the community is top notch!

Motivation to pay off the car so I can drop it off at PTUNING is in the video. That sound is glorious.

That sounds puts a smile on my face every time.

[ecko04]

Love the kit, even better video. I didn't know Travis was there. I hate when meets get interrupted by the weather...the rain just couldn't hold off for 1 more weekend.

[Sonolin]

Awesome video. Very surprised on drivability & spool up of turbo looked very good. Damn I love this kit

[SnapOv3st3r]

This system truly is top notch.

[MooKz]

Can't wait for my downpipe to come in! At first I was going to wait until next year because I'll still be on stock tires this winter but now I'm like EF IT! Let me know when my downpipe is in and lets DO THIS! lol Great stuff. Always love his videos as well especially back in my tC days. Dreamed of the PTuning kit for my tC but didn't have the money back then