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Discussion Starter #1
on a mkiv tt at?
on a mkiv tt mt?

bcc,avcr,safc,greddy fmic,dp,tanabe exhaust,vpc,egr mod,blitz
bov,walbro gss341, sard fpr set to65 psi max pressure, iridium plugs,
elektric dualfan,hks intake, max airbox, bd fuel dampener bypass
line, fluidyne radiator, water wetter

thanks
 
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Discussion Starter #3
badtoy said:
on a mkiv tt at?
on a mkiv tt mt?

bcc,avcr,safc,greddy fmic,dp,tanabe exhaust,vpc,egr mod,blitz
bov,walbro gss341, sard fpr set to65 psi max pressure, iridium plugs,
elektric dualfan,hks intake, max airbox, bd fuel dampener bypass
line, fluidyne radiator, water wetter

thanks
At least 450 RWHP...
 

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I would also say you'd be getting 435-460 rwhp with tuning. That would be one hell of a strong BPU (with many +'s) car.

Steve T.
 
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Discussion Starter #5
actualy I set the af ratio to 11,5 and the boost to 22psi. now the automatic tranny slips in the first 3 gears. I will go and upgrade it soon........ first I tought to upgrade my stock torque converter too. but I decide to stay with the stock unit because I'm a daily driver. Do you think it is possible to beat high 11 on street tires? at what trap speed 122 to 125 mph?
thanks for your support.
 

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My mind is forged
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22 psi on stockers = bad idea. Soon you will have same problem as mine - rebuilding whole engine & turbo(s) I have 72000 km odo and after two months of 20 psi - big problem...
 
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Discussion Starter #7
That much boost is not the problem; that much boost on the stock twins is. The turbos themselves are overstressed well beyond specification at 22 psi. But the engine laughs at the power output the stock twins put out at 22 psi - it's more likely the intake charge temp was consistently too high and you burned a valve or such.
 

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BPU is so 1997
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Walser said:
That much boost is not the problem; that much boost on the stock twins is. The turbos themselves are overstressed well beyond specification at 22 psi. But the engine laughs at the power output the stock twins put out at 22 psi - it's more likely the intake charge temp was consistently too high and you burned a valve or such.
So are you saying wth the use of a FMIC, you could possibly lower the temp and run 22psi?

Granted I would never do that since like you said, the turbos are overstressed at that level.
 
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Discussion Starter #9
@walser,
thanks for your reply. I worked about 100 hours on thermic problems on my car. now I'm able to say that max oil temp is about 112 degrees (after racing) and max egt is about 690 degrees, messured in the dp. I never had any detonation problem on my car even not in summer with 22 psi boost. what should be the max temp at the intake air? I will mesure it after rebuild the tranny.
btw if you make a thermic barrier between the turbos and the intake pipes you will be able to hold the intake air temp down, after the thermic barrier follows the fmic.....after the fmic again thermic barrier.........

@peter poland,
as I remember correct, you wrote a view week ago that you boost about 1,7 bar right? with which plugs/heatrange? without any egr plate right? I checked all you pics with big intresst and saw that your engine bay was very dirty and dusty, hope you cleaned all the time your intake well........ there are a lot of possibilities to destroy an engine.......
 
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Discussion Starter #10
sorry I forgot, what is the most efficient boost on stock twins? the last 2 years I used to boost about 18 to 24 psi without any problems. is there a possibility to upgrade the turbos on a stock base? it means to still use the factory sequential system with bigger turbos? I notice that Andi B. website use to boost 22psi too.
one more question. how many degrees is the max temp on a stock turbo at 22psi or 24psi of boost, any ideas?
thanks
 
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