Boost difference at high altitude
Thread Starter
Joined: Jan 2009
Posts: 1,106
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From: Lebanon
Cls63 & C32
Boost difference at high altitude
I was seeing 1.3-1.4 bar in redline third gear at 700ft altitude, today i went to like 5000ft altitude and the boost drop to 0.9-1.0, is that normal? i though i will see higher boost!!
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
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From: Philadelphia, PA
2008 A8L, 2002 996TT X50, 2009 X5
I was seeing 1.3-1.4 bar in redline third gear at 700ft altitude, today i went to like 5000ft altitude and the boost drop to 0.9-1.0, is that normal? i though i will see higher boost!!
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
And yes, at elevation, N/A engines are robbed of power at a much greater rate than F/I engines... so your C32 will perform at a somewhat comparable level, but that E93 M3 will be gasping for air.
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C55,SL55,C63
I was seeing 1.3-1.4 bar in redline third gear at 700ft altitude, today i went to like 5000ft altitude and the boost drop to 0.9-1.0, is that normal? i though i will see higher boost!!
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
Btw i didn't feel a drop in performance.
And last summer i raced an M3 V8 convertible SMG at the same place elevation(5000ft) i win by more then 3 cars at 1/4 mile approximatly.
I believe it. At that altitude. a NA engine will suffer at the track more than a FI engine.
Thread Starter
Joined: Jan 2009
Posts: 1,106
Likes: 85
From: Lebanon
Cls63 & C32
i have also a boost gauge, but how are mesuring this high boost at this elevation 18-19psi (1.3 bar)? i was reading my numbers same day same hour and the difference was from 14.5 psi to 19 psi. Maybe my gauge or your gauge are not adequate, or maybe i have a belt slippage, i must order a belt wrap kit.
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2005 Pontiac GTO 6.0 LS2 - Blue
I would assume belt slip, but my boost gauge is analog, so I would question it's accuracy... I do have the NW saver/belt wrap. Recently while my belt was saturated with engine oil, and coolant I hit max boost of 15PSI. Major belt slip. It was even smoking after...
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Thread Starter
Joined: Jan 2009
Posts: 1,106
Likes: 85
From: Lebanon
Cls63 & C32
this is my problem thanks, cause i was having oil on belt from the oil water coolant also, i'll order tomorow belt wrap kit, my gauge is also analog.
