Intercooler upgrade
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Joined: Feb 2007
Posts: 597
From: Fayetteville, AR
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IC's
Do you have the conical style air filters in the duct area with the B6 IC's?
Registered User
Joined: May 2004
Posts: 1,035
From: Lo Barnechea & Viña del Mar
Rep Power: 66
Last year Stephen at iA sent me the Evo IC’s and since then I do not regret a second the purchase.
We are having a very hot long summer and the power is super consistent (Insurance for healthy A/F ratios @ 1.2bar to the red line on 93
) and even more important with the additions of the 1.0 bar WG, it absolutely transform the Power&Torque band between 1,800-4,800 Rmp’s, much less lag and usable/enjoyable power&torque.
A lot of people here criticize this mod at 520 AWHP at list give you 5-8 AWHP (30rwhp
at 600AWHP) but for my personal experience decreasing lag and making a more elastic power/torque delivery will overcome to get just a simple/spike marketable attractive peak AWHP.
We are having a very hot long summer and the power is super consistent (Insurance for healthy A/F ratios @ 1.2bar to the red line on 93
) and even more important with the additions of the 1.0 bar WG, it absolutely transform the Power&Torque band between 1,800-4,800 Rmp’s, much less lag and usable/enjoyable power&torque. A lot of people here criticize this mod at 520 AWHP at list give you 5-8 AWHP (30rwhp
at 600AWHP) but for my personal experience decreasing lag and making a more elastic power/torque delivery will overcome to get just a simple/spike marketable attractive peak AWHP.
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Joined: Dec 2006
Posts: 1,771
From: NYC
Rep Power: 136
+1! I also picked up the EVO IC's from Stephen last year, and they have made a HUGE difference. Just as Pierre says above, less lag, stronger boost, and cooler temps. Even better, with lower boost (1.1 bar), I'm making the same if not more power as I was before at 1.4+ evidenced by my trap speeds in 1/4 mile and Vmax (no other mods). Well worth the effort it took to install!
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Joined: Feb 2005
Posts: 1,309
From: Toronto Canada
Rep Power: 82
The X50 IC's are not worth the work putting them in, I went with Blown 6 out of Canada and I am a happy guy.I know the Evo are awesome but Blown 6 was local and I could have them the next day.
I had the B6 ones in my car... I loved them coz I didnt have to mod the car or hack it.......everything bolted right up and the car ran super.... PLUS SAVED....$$.. did I say how much cheaper they were from the rest...Oh you save $$$$$... remember they didnt cost as much as the others!! lol....
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Joined: Jun 2004
Posts: 1,163
From: Earth
Rep Power: 91
Let's see...If there is any intercooler around that can keep intake temps within 68 F of ambient temps at full boost in 4th gear it would be a major achievement. B6, EVOMS, PROTO, SPEARCO, BELL, stock whichever...Bar and plate or not, tube and fin etc...etc.. This would still put it at 70-80% efficiency MAX.
To measure this correctly, you need to hook in a Bosch hammer to your OBD II port and read the temps as you accelerate at full boost in 4th or 5th for a few seconds, very easliy done with a video camera. The upcoming texas Mile would be a great testing ground for all these wonderfully marvelous ICs. So let us see some real life data, forget test bench measurements for a while.
An intercooler with a 200% efficiency would actually drop your intake temps by an impossible amount. Here is an example:
Ambient temperature: 70F
Temp before IC: 240F
IAT: 138F
Thermal Efficiency: (240-138)/(240-70)= 60% efficiency.
Wonder intercooler:
Ambient 70F
Temp before IC: 240F
IAT: 10F
Thermal Efficiency: 135%
Let's see those ICs with IAT readings within 68F of ambient temps at full boost.
The efficiency numbers thrown around are really misleading, certainly there are some better than others, but within realistic limits, and most of them would not make any difference to the occasional qmile times. A one mile run is a different story I am sure.
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Joined: Sep 2006
Posts: 488
From: Boston & Dubai
Rep Power: 0
+1! I also picked up the EVO IC's from Stephen last year, and they have made a HUGE difference. Just as Pierre says above, less lag, stronger boost, and cooler temps. Even better, with lower boost (1.1 bar), I'm making the same if not more power as I was before at 1.4+ evidenced by my trap speeds in 1/4 mile and Vmax (no other mods). Well worth the effort it took to install!