The stock IC isn't 646 ci....maybe the s3, stock on the gti is approximately 350ish ci...the Wagner that op and I have is 1050-1100 ci
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When intercoolers are TOO efficient.
- Thread starter Injen1us
- Start date
The stock IC isn't 646 ci....maybe the s3, stock on the gti is approximately 350ish ci...the Wagner that op and I have is 1050-1100 ci
This is an exemple taken from an other car platform.
read through this blog a lot of myth busted like dump valve, ic , 0 to 60mph...... etc
take with a pinch of salt but I like is out of the box thinking.
scroll through the pages.
http://www.stavtech.co.uk/home/previous/4
read through this blog a lot of myth busted like dump valve, ic , 0 to 60mph...... etc
take with a pinch of salt but I like is out of the box thinking.
scroll through the pages.
http://www.stavtech.co.uk/home/previous/4
No, I mean I understand that, but this is one of those things you can ask 10 people about and get 10 different answers. Top intercooler makers will even tell you that with a small turbo and big ic will produce a noticeable lag. This is also dependant on the quality, type, etc of ic in question. A good IC, should, in theory have less pressure drop, but larger will produce some...that's just how it is. I do agree that the "lag" part is up for debate.
Injen1us
Drag Race Newbie
Correct. Stock is around 350 ci. Neuspeed around 450; Wagner and SPM are closer to the 1000 mark
This
Injen1us
Drag Race Newbie
I can tell you without a doubt in my mind that there was a huge difference in lag between S3 and SPM ICs... noticeable via an analogue boost gauge. Now i still prefer the latter IC because of its cooling.
Ok, I've taken a good look at the site, and I'm not going to cause an Internet argument. I will say these few things.
1. Much of what he says makes sense, but he backs it up with opinion, I don't see any proof from testing, from actual data to back up his opinions.
2.the guy can barely get out a sentence without dropping the F-bomb, which really makes him come across as ignorant and a know it all.
3. Lastly go and blow through a small coffee straw, then go blow through a full-sized soda straw. It will be easier to make pressure with the smaller strong but take more time and more effort to get the air through there then the larger straw. The same principle will apply to filling up a larger intercooler. Even a miniscule amount of lag from a larger intercooler someone will notice when they are used to their car. They drive it everyday and are used to where the Power Band starts, so you are right that it may not increase the time it takes by much but it will be noticeable on the same car with the same person driving it everyday. That is why people say they feel turbo lag.
I will also add that I skimmed through several pages butt it didn't look like anything was actually myth busted but rather just someone's opinion as to why he believes what he does. You could find probably hundreds of Articles or even just arguments on forums as to why a larger intercooler causes more turbo lag.
Surprisingly boost log with Wagner doesn't seems to have much lag. But I'm still puzzling why it starts to dip at 4K while specified boost is still high. Weak actuator perhaps? Unfortunately I didn't log the S3 to compare
https://drive.google.com/open?id=0B7h3oDkL-PAiSWtSb1JoS0FRMWs
https://drive.google.com/open?id=0B7h3oDkL-PAiSWtSb1JoS0FRMWs
Mine is the same way, I don't always hit specified, and while I need to verify I don't have any leaks, I'm about 2-3 psi under specified, but my wgdc is also only in the 60% range much of the time in a 4th gear pull
brobst
Go Kart Champion
Golf R k04