advice on adding AWE or Autospeed Exhaust manifolds
02-10-2004, 04:52 PM
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advice on adding AWE or Autospeed Exhaust manifolds
Have already gone to stage 3 and plan on adding RS4 intake Mani/RS4 TB and RS4 cams and while I am at it the thought crossed my mind to upgrade the exhaust manifold as well.
I see from AWE web site it aids in quicker spool up and adds a little HP and TQ down in the rpm a little sooner as well. I don't see much downside with this addition other than the cost. I figure if upgrading DP's and exhaust then the Exhaust Mani has to be a good idea for the same type of reasons or am I missing something ?
I see from AWE web site it aids in quicker spool up and adds a little HP and TQ down in the rpm a little sooner as well. I don't see much downside with this addition other than the cost. I figure if upgrading DP's and exhaust then the Exhaust Mani has to be a good idea for the same type of reasons or am I missing something ?
02-10-2004, 05:05 PM
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you have to pull the motor again. It is good to address the exhaust manifolds when you swap turbos
not after
You can either use piggied exhaust manis --> welds cleaned up, porting, coating or buy the aftermarket manis.
The coated awe manis are very nice.
You can either use piggied exhaust manis --> welds cleaned up, porting, coating or buy the aftermarket manis. The coated awe manis are very nice.
02-10-2004, 06:05 PM
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AWE is ceramic coated - Autospeed is not
Question is how effective is the coating? I have seen ceramic coated headers that darken with age from oil spillage, dirt, etc. This will cause more heat radiation. Stock double wall headers will not degrade in that way. I have not seen a comparison of heat transfer stock vs single wall coated, but my guess is the stock will retain more and transfer less heat. I have no idea how significant this is.
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02-11-2004, 06:03 AM
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Thanks guys. Looks like the Autospeed ones are Swain tech coated after all and
The seem to have a pretty good story to tell. Anyone here ever installed just the exhaust mani's to see what perf. improvements it made ? Just curious !!
Thanks. JG
Thanks. JG
