All Things Mk5 > Performance Modifications
Stage 2 - Intercooler needed?
AndyED30:
I hear what you're saying Rich........I'm yet to find a cheap one :signLOL:
rtechniki:
The cooling on the oem fmic is fine, the issues are the aircon rad fins becoming bent and limiting are flow to the fmic core which causes elevated air temps.
The oem fmic has a pressure drop of around 3-4psi from hot side turbo outlet to the cold side which costs around 20-30bhp in flow efficiency.
I have found the S3 alloy fmic setup work best on the GTi k03 setup for stage 2, I recently tuned a Leon Tfsi K03 to 300lbft 293bhp just using a turbo back full exhaust, S3 alloy fmic, a Forge twin take and 5 mm actuator adjustment. There is NO need to upgrade the HFFP as I have found the OEM unit will work happy at 280-295bhp at 120bhp with the k03.
Nick
E30Dom:
Been very pleased with my alloy S3 cooler on my stage2+ ko4 car... Especially on these colder days ;-)
Easy to fit DIY ;-)
RedRobin:
--- Quote from: OVERTFSI on December 18, 2012, 08:11:57 pm ---
There is NO need to upgrade the HFFP as I have found the OEM unit will work happy at 280-295bhp at 120bhp with the k03.
Nick
--- End quote ---
....I know you are an expert tuner and I respect your opinions but, if I have understood your post correctly, there is every advantage in upgrading your HPFP when running an efficient aftermarket air intake on Stage 2 (Revo). In my case, changing to an APR fuel pump made a significant and noticeable difference in how the power is delivered.
RedRobin:
--- Quote from: richwig83 on December 18, 2012, 07:33:45 pm ---
--- Quote from: RedRobin on December 18, 2012, 07:22:49 pm ---
--- Quote from: bendy on December 18, 2012, 03:41:48 pm ---
Im on stage 2 in a KO3 gti and only have standard intercooler.
I do get some heat soak if really giving it hell but does not cause a problem most of the time.
--- End quote ---
....Me too but I don't get heatsoak problems on fast road use.
--- End quote ---
I bet you do to a certain extent... you just are not aware of it. On the dyno heatsoak is a nightmare. Run a 2.0T with OEM IC twice in quick succession and you'll see about 10bhp reduction.
--- End quote ---
....You are probably right, Rich, but it's not noticeable and therefore insignificant as far as I'm concerned. I go by what I feel when driving and not the technical science of it. You and I are totally opposite in our approach to this and similar things (music, for example). :happy2:
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