Rogue_Ant

A k26/8 will not hold 19 to redline.



Rogue

nize

Rogue_Ant; what are you basing your statement on? what if i told you that i have datalogged the stock k26/8 holding 19 to redline using a tial wastegate?

attyjeff

whoooo a fight.....everybody stand back.........I will need you both to sign waivers not to sue or get law enforcement involved........

ilikemy944

Hmm.
I have one too.
Drops to 15.

nitehawk951

My money is on rogue. Nize can't take a joke or throw a simulated punch.

Hey Vitesse, I am going to be in the market for an MAF very soon. I will definately consider your MAF and from all the positive feedback I am pretty sure I will buy it from you. I will PM you later for help if thats cool. Great thread.

docwyte

My K26-8 with a Tial couldn't hold 15 to redline either.

ehall

LOL two purveyors whose most wanted posters hang prominantly in the Porsche post office. Though possible, you would be hard presed to find two less reputable Porsche people...ofcourse Danno might be willing to talk to you...lol

jyoon

my k-26-8 with tial goes to 15psi then falls to 13 at redline. if i adjust the boost, will it go to 17, then 15 at redline?

nize

how are you guys controlling boost? manually?

kevincnc

I just put on a new Tial, and my 26/8 with 33K miles hits 18 PSI easily (accidentally...for now) but also bleeds off to 15 at redline (Profec EBC). So Nize, what's the secret to holding 19 PSI to redline with a 26/8?

nize

i have electronic variable boost control, which controls dual solenoids, which controls the tial wastegate.

i configured it to gradually close the wastegate as the motor approaches redline, sustaining boost.

i'm sure that if you were also able to close the wastegate 100% as you approach redline, you could sustain 19psi of boost with the stock k26/8.

Rogue_Ant

I sure would like to see a K26/8 holding 19psi @6500rpm. Here is a datalog of my K27DR holding only ~17psi @ 6541RPM:




This is not with the stock wastegate either. Granted, this is at 5280+ feet, and that is ~3psi or so less air pressure, which would be similar to holding 21psi @ sea-level. I don't believe a stock K26/8 will hold only 2psi less then a K27.



Rogue

nize

how is your wastegate/boost controlled? do you have the ability to completely shut the wastegate at redline?

sawood12

Why has the wastegate has anything to do with this if you have a DPW. My understanding is that the DPW compares the actual manifold pressure to the 'set' pressure regulated by your boost controller so if you set your boost controller to 19psi then your wastegate should be closed at 19psi irrespective of RPM as the pressure either side of the diaphram is the same - assuming your boost controller is working properly of course. I had been lead to understand that the K26/8 does bleed boost pressure at high rpm's due to the physical capacity of the compressor - it simply cannot flow the volume of air required to maintian boost pressure, it isn't physically big enough - though if someone has done it is obvioulsy can!

reno808

i have a k26/6 and holds 16/17psi all day with the tial and of course the EBC. With out the EBC i wont be able to hold the boost till redline.