Gt2259 smaller turbo better torque

[-Willis-86touge]

Yea good one? So does that mean the wrx has different rods

[Northwest86]

Quite nice. The 86 graph I posted earlier was also a Disco Potato. Your kit was quite cool. As someone who does similar work except in an industrial setting it was good to see the work process. I still love Water to Air Intercoolers though. The throttle response difference is out of this world.

[Northwest86]

Yep the WRX rods are different but by no means forged. You still have to notice that these smaller turbos spool well around the 2.5-3.5k range on our cars depending on the kits. The biggest differences that I noticed when trying some other people cars was partial throttle control, agressiveness of boost and full off throttle to on throttle spool. Thats where the Cast manifolds and W2A intercoolers make massive differences.

Forget trying to get torque like a FA20DIT though. As mentioned it will explode, you won't be able to drive it and internally they are modified for different uses.

[-Willis-86touge]

So fully built 2.1 then lol

[mrk1]

Originally Posted by -Willis-86touge

See from what I see I like this curve on low boost but also its hard to tell due to not show rpms but if I'm correct it shows no thing till after three thousand which is weird and if so that means More lag down low??

"Lag" the internets favorite word. There isn't much happening down low because thats where dyno pulls start. Pretty much simulated cruise, low rpm, very little throttle. My pulls where also only done till about 6800rpm so thats the drop on the other end.

[-Willis-86touge]

Yep under stand how a dyno works. So I guess il just explain what I see. Mrk1 dyno at idle has a torque of roughly 110lbs at about 2600rpms and the dyno of the wrx has an idle of 210 lbs at about 2300lbs. So basically I see little to no boost on mrk1 dyno at low rpms and on the wrx the boost must be there or else the torque value would be closer to stock torque numbers at idle around a 100lbs or so. Witch is close to what mrk1 is at his idle too! So is the lag? Dunno maybe your car has great response.

[CSG Mike]

Originally Posted by -Willis-86touge

Yep under stand how a dyno works. So I guess il just explain what I see. Mrk1 dyno at idle has a torque of roughly 110lbs at about 2600rpms and the dyno of the wrx has an idle of 210 lbs at about 2300lbs. So basically I see little to no boost on mrk1 dyno at low rpms and on the wrx the boost must be there or else the torque value would be closer to stock torque numbers at idle around a 100lbs or so. Witch is close to what mrk1 is at his idle too! So is the lag? Dunno maybe your car has great response.

lag is not measured/indicated on a dynograph.

[mrk1]

Originally Posted by -Willis-86touge

Yep under stand how a dyno works. So I guess il just explain what I see. Mrk1 dyno at idle has a torque of roughly 110lbs at about 2600rpms and the dyno of the wrx has an idle of 210 lbs at about 2300lbs. So basically I see little to no boost on mrk1 dyno at low rpms and on the wrx the boost must be there or else the torque value would be closer to stock torque numbers at idle around a 100lbs or so. Witch is close to what mrk1 is at his idle too! So is the lag? Dunno maybe your car has great response.

If your interested in the small turbo build it! See how it works for you, dyno graphs only tell part of the story. Building a turbo kit aimed at response isn't rocket science.

[stevo585]

Originally Posted by Northwest86

The other thing is drivability. At the track I probably run different tyre setups and different driving styles to the guys with Supercharges and NA cars. Converting all those numbers into stuff I understand is a pain. You people and your imperial system.

Well take into consideration at 3500 RPM it's making 198 Ftlbs (270ish Nm) Thats alot really. There's not many people and or cars built to handle that at wide open throttle in any level of corner. Hell on 8Psi I run roughly 250Nm (185 ftlbs) on a 90/91 tune. At the track I discovered I simply have to run decent width R-spec Semis or I cannot use the power at all. A 225 Nitto NT05 had wheel spin. On every corner even at half throttle. With 255 NT01's its excellent. More tyre would definitely be a waste of time though as I could not use it all.

My ESC powered car put down ~200 wtq from 3-5K. Its tractable in 2nd gear and up. I have 245 PSS.

Also on centrifugals they are all lag what are you guys saying? Put you foot down at 3k not much happens unless you in a low gear. They don't come into boost much below 5K. A small turbo or the ESC has alot more area under the curve. Maybe less top end though. Think about where you spend most you time at, rpm wise. I have ran 13.8 @ 101. With just 1.5 psi up top but 4.5 at any rpm less than 5k down to stall ranges around 2K.

[sw20kosh]

Originally Posted by -Willis-86touge

Yes I understand that too I finally got a post up with a stock wrx dyno up top and this dyno is done by ptuning and is probably the best dyno I have seen for are car for daily driving! But if you notice how the wrx has more torque down low!! Also just wondering how are numbers would be compared to the wrx seeing how we have a higher compression to start with. As for the gearing ratio I believe the wrx only has a 4.11 gear and are are I be live 4.10 so there's not much difference there

No one has been able to reproduce that low end torque on a different dyno with the ptuning kit. That is just an artifact of how they have their dyno setup. On a dynojet two ptuning kits around here make about 150-160 ft lbs at 3k rpms. You cannot get around the physics of a GT3076r. That being said the ptuning kit is the best turbo kit on the market.

[-Willis-86touge]

I agree ptunning prob has the best available! Still I beg the question on what the mgt2259 would do on are motor. Fact it's smaller and twin scroll so should be more responsive and dare I say it less "lag" and I understand that the hp will not be as high as some dynos but there have got to be more than me who sees that hp is not everything. It's the ratio between hp and torque.

[Northwest86]

Originally Posted by sw20kosh

That being said the ptuning kit is the best turbo kit on the market.

You have yet to see the competition. And it is glorious. Trying to say one is better is a bit pointless. The only "better" I see is different kits ability to not overheat on the track and drivability.

[-Willis-86touge]

We'll let me refraze that best of the shelf for the typical person to buy put on and drive Dailey, there are way to many options to say one is the best hell we could get into a debate about turbo vs supercharger vs swap lol

[Northwest86]

Originally Posted by stevo585

My ESC powered car put down ~200 wtq from 3-5K. Its tractable in 2nd gear and up. I have 245 PSS.

Also on centrifugals they are all lag what are you guys saying?

I don't believe I ever said the centrifugals were all lag. I said that they make very solid boost everywhere. In fact if I hadn't of gotten what I did, I would of went with one. But turbos are still better. I just don't see a level of quality and usability in a FBM, AVO SME etc turbo kit to ever warrant me wanting one. In fact I think they are dog's of things to drive. My traction issues I believe I pointed out not to be in a straight line but rather on a track pushing the limits on my tyres. With a 245 PSS I'd guess that I'd have traction issues in the same place since I run full semis now and could still get into issues if I did something wrong. Not to mention overheating. Which all came under the usability argument of trying to get WRX levels of torque (300Nm+) on a 86.