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One time Andy and I were racing and we were side by side and it looked really fierce and I could see the fear in his eyes as I stared over at him.....





...and then the light turned green.

 
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HAHAHAHAHAHAHAHAH!!!!!11one!!!

 
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stock sleeves

 
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Yes. No blockguard, no nothing. And it didn't pop a gasket or overheat once.
To be honest, I think it's a myth.
....and your car overheated again?

 
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Again, amazing!





Wagner

 
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Its not a myth actually. If you run race gas here and there you'll probably be fine. The lead in the fuel can accumulate on the valve stem and cause it to stick. Its not very common but it can happen. I doubt it would have anything to do with a diaphragm. A lot of new wastegates are lead safe.

 
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sick numbers andy. bringing hope to the little guys we call d17's everywhere.

 
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Yeah but if it can happen, it can happen on any wastegate..... That's why I say I think it's a myth that it's prone to happen on wastegates with diaphragms.

 
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Now you just need some power windows in that beast!

 
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Waow Andy your car is a dream come true. I got a friend with an Acura TL Type S 08 and Acura TSX they go out to these race nights out in some factory area's. I've heard about a few hatch back civic's but this would be just a breath taker. The other guys would not even know what happend.

Amazing work bro, I wonder how it feels to drive that beats. Hope you get that extra 40-50whp that you want.

 
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Lightweight > power windows

Yeah, it's a blast to drive. This turbo is ****ing loud as ****, I love it, lol.

New diaphragm and spring will be here Friday and I'm going to retune again on the 16th. Woot.

 
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nice

 
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is it the 0.82 housing your using?

spool seems to be the same as your previous setup...

and i would love to know the amount of boost drop on that intercooler, judging by your post it looks pretty effecient!!!

GREAT numbers btw keep going up

 
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No, 63. Even considering I went from a 48 to a 63 and opening the downpipe to a 3", I'd say it's still pretty ****ing efficient. But it does appear that way based on the curves. They don't show the way the turbo kicks, it can't really be measured, but there is certainly a difference when you drive the car.

PWR advertises a less than 2% pressure drop on their cores. It really is phenomenal and worth the cost.

More in regards to spool time, running the boost levels I'm at, a 7 psi wastegate spring isn't the most efficient part of my setup so I'm swapping it out with a 10 psi spring which should increase spool efficiency.

 
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yeah i'v been hearing about those GT turbo's and thier kicks

is it true, that it builds boost faster between shifts? (comparing with the T3/T04e setup)

i can't wait till you redyno the bish with more boost!!! (and a bigger housing in the future )

 
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to be honest I haven't really pushed it too hard yet. I am about to order my oil cooler and fittings as summer is here.

 
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DAMN Andy, I really can't wait til I get the money to start my build I will definitely be going up there to MD and seeing you when I get mine underway... I'll just use the excuse of visiting my wifes family...lol.

 
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You CAN run a 38mm on race gas, just not a standard one. There is a special one with a different valve stem noted here on TiAL's site:

http://tialsport.com/prod_wg_38.htm

The TiAL F38 is the only wastegate with the option to choose the valve stem's protective coating. To keep the overall cost of the unit down, the choice of coating was left to the customer.
Lead Oxide which is present only when burning leaded fuels is corrosive to the Black coating on the Street valve's stem. Extended use of leaded fuel will cause performance problems and unreliable valve actuation.
The Silver coating on the Race valve stem is resistant to the corrosive effects of Lead Oxide. Similarly works well with unleaded fuel. The Racing valve is available for an additional charge.

 
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What pressure?

 
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Changing from a 7 PSI to 10 PSI spring should have no bearing on turbo efficency. Nor should it have any bearing on response. Your boost controller duty cycle will have all of the bearing in the world along with your AFR AND Ignition timing on turbo response.

Not fighting or knit picking, just stating facts Andy. Still congrats on the progress though man. VERY impressed.

 
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I had a long discussion with Jeff about the leaded fuel and wastegate failure. It would have to be a car that had SERIOUSLY prolonged exposure to high octane leaded fuel. Not worried about it on mine.

Fuel pressure is at about 75 psi on 25 psi boost.

Sure the wastegate spring will have bearing when you're almost quadrupling the boost level. Boost control duty cycle does have an effect, of course, but you're trying to keep a 7 psi spring from compressing under 25 psi boost..... it isn't going to be as effective as a 10 psi spring will.

 
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That's quite a bit of FP, but I am sure it atomizes perfectly.

Running anything more than 60% (IMPO) on a wastegate allows for inconsistancy when higher boosting. I would have atleast had you run a 14 PSI spring, and even still that is not enough for my guidelines.

I did think about that duty over and above when you posted the 7 PSI spring. I was that's like 357% more.

 
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Yeah, it's a fine line between traction and boost control. This mac valve is freaking awesome. It surprisingly holds boost very consistently, even on a 7 psi spring. I don't want to go bigger than 10, just for traction's sake. I figured this was a happy medium.

 
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Yeah, you probably make a good 250whp or so on 10 PSI I would imagine.

 
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remember in 2001 and 02 when people on this forum said no d17 will ever reach 400?

 
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oops double post

 
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ya and some still think on other sites that its not possible with a 7th gen. i bet he could get quite a bit more on pump gas if he PNP'd the head and put some water/meth injection on it.