I had the blown6 installed on my K16/24 ,my car has 570hp at the crank and I could be wrong but my car felt slower so I sold them again after 14 days.

 

unless you are experiencing heat soak or power loss from inefficient cooling, going to larger cores will only increase the amount of volume of air your turbos will have to push. so in theory you will lose power or increase in lag if you dont have these isssues. ideally you want your ic cores to have the smallest volume but most efficient cooling for the type of turbos,

just because you install larger or claimed increase in efficiency doesn't mean guaranteed increase in hp, most will probably loose power.

 

I agree with Oak. If you install an intercooler that is "oversized" for the turbos - you will increase lag and reduce throttle response, since the turbos must take time to charge the larger volume of an oversized tank before pressure gets to the throttle body. Based on my experience, I can say that the B6 IC's work very well with the K24/18G turbos, as I have less lag with this combination, than I had with the stock IC's and K16/24 turbos. What this demonstrates is that the K24/18G turbo has the capacity to fill the B6's volume without delay, so it's a good match. I can see where OEM K16's may "possibly" suffer some additional lag and reduced response with the B6 or equivilent IC. Porsche probably designed the OEM IC with quick response for the K16 in mind. As you climb up the HP ladder, it only makes sense that more heat, air, etc. will be generated, therefore, increasingly larger IC's can and should be used at various levels, with an eye toward matching quick flow with proper cooling capabilty.

 

Oak and John D, how does one figure out what size ICs is most efficient for one's purposes. Most of what is out there is one size fits all, and from what I understand from what you guys are saying this is may not be the most ideal setup (depending on what turbos u have) and may even hurt efficiency and power overall.

How would one go about figuring out what is the ideal intercooler size for K16/16G turbos running 1.1-1.2 boost ?

 

I put the b6 intercoolers on before I got my new turbos and was stage 2 around 480-500 crank. I could not feel the difference but was told that this should allow my ecu to maintain as much timing as it could in lond DE sessions at Road Atlanta in June and August. It gets hot down here in the south. I now have UMW stage 2 zc turbos and tuning and was told from kevin himself that better intercoolers were advised due to my regional heat. Probably not neccesary if your ambient temps don't go over 80 or so. If you are like me boosting in 90 plus degrees on hot *** roads etc. might not be a bad idea. No big improvement when cool but not as much timing pulled when things get hot so more of your original power stays available. Sounds reasonable.

 

ramone,

I am not sure how to calculate the proper size, but I have been told by a few tuners and read that if not matched properly, you can end up with more lag. I think the B6's would be fine with any level of tuned 996TT and may not be as well matched to a stock car. For instance, you would most likely increase lag if you put huge IC's on a stock car. Just as Speed Gallery cautioned me at stage 4 that their Y-Pipe would increase lag a bit due to the air required to fill it, but add mid-top end power...