i have a ams fmic and boost just fine i hit 24 psi with no b/c and it holds thats what happens when u buy a cheap core. the only reason they laid down better numbers then the greddy is because its about a 1'1/2 bigger on over all size

 

I had an Avo intercooler and I believe It was advertised that it would have a drop in psi. I know Avo make good products. I have a turbo xs intercooler- psi drop also, no much but there is a drop.

 

and they dont have any dyno numbers thats the reason i didnt get that front mount.

 

i am either going to buy one of three intercoolers i have my eye on, spearco, buschur or the ams. im lening towards the ams but im still very undecided. buschur is 650 ams 700 and the spearco is 900. i had a spearco on my 1.8t and holy quality. that thing was awesome. but its just so damn expensive.

 

Thanks for the info guys.


It does come down to simple mathmatics, I checked for leaks..none.

I turned the boost up a little and its fine, I dont know why everyone thinks the Nisei is a "cheap" intercooler. I have read nothing but good things about it and my car definitly pulls harder up top also.

Now I just need to get a TME hotside, Meagan Manifold and some Cams to make her scream.

Will 264's suffice? I don't wan't to sacrifice the stock idle.

 

Is that why they get paid so much?

 

If the same volume of air is flowing but it is a lot colder, how could it maintain the same pressure? I think the reason some people are not seeing a pressure drop while others are might be where they are tapping their boost control pressure signal line and what kind of boost controller they have, and also whether they are maxing out their turbo pressure already. Now, let's just say you have a manual boost controller and the line leading to the spring is coming off the nipple of the turbo or somewhere before the intercooler. You are going to have the exact same amount of pressure made by the turbo itself, but if the bigger intercooler is cooling the air more than normal, you are going to see a pressure drop at the manifold. The same thing applies to an electronic boost controller that runs strictly on duty cycle. Now, if you have a MBC and the line leading to your spring is coming from the manifold itself, well it won't open the wastegate until the pressure at the manifold is at the desired pressure, so it will make your turbo work a little harder to put in more air so that when it's cooled down, it's at the same pressure. Same with an EBC like the AVC-R that uses algorithms and actual pressure measurements to control boost as opposed to duty cycle. Now, if you are already maxing out your turbo, there is nothing you can do to make up for the pressure drop regardless of what kind of boost controller you are using, because the simple fact of the matter is, the same volume of air at a cooler temperature will occuply less space and therefore make less pressure on its container. On the bright side even at less pressure you are putting the same amount of oxygen through your engine at a cooler temperature so it's not always a bad thing to lose pressure.

There is also a natural pressure differential before and after an intercooler at different boost pressures even if the air is at ambient temperature and the intercooler has no cooling effect. This pressure differential increases as the boost side increases. This also factors into the equation. It's possible to have a net gain in manifold pressure if the enhanced flow characteristics of the new intercooler outweigh the drop in pressure from the increased cooling effect. It's also possible to have a net loss, which I believe is the most likely case given our intercoolers flow fairly well but our turbos are pretty close to maxing out, making a lot of hot air. Generally, the bigger the intercooler, the less pressure drop you are going to see from the intercooler itself at ambient temperature, but the laggier the response is going to be and the more pressure drop you'll see from the cooling effect. Of course it makes no sense to get a huge intercooler with almost no natural pressure drop and crazy cooling effect if it's going to take forever to fill it up and ruin the responsiveness of your engine. This is why you need the right sized intercooler for the turbo you are running. Preferably one with very low natural pressure drop (not restrictive) and a very high cooling efficiency (which will hopefully drop the pressure in a good way).

Cliff Notes: It's all very complicated. If you don't have any boost leaks and are making more power, don't worry about it and enjoy your new intercooler.

 

Well said..thanks.

 

Wouldn't it have been easier to just say that Buschurs pressure drop is .84. Stock intercooler has more pressure drop therefore the boost would go up with less pressure drop. If the think the stock IC has a lower pressure drop then you are smoking it.

 

It would have been easier to say that, but it's only about as accurate as news reporters taking one sentence of out a 200 page senate report and drawing all their conclusions from it.

 

Good stuff!

I believe it's fair to say MOST FMIC's out on the market are OVERSIZED for the stock turbocharger. Therefore the "loss of pressure / pressure drop / back pressure" (whatever you want to call it) through MOST aftermarket FMIC'S will have less drop/loss than the "stock core."

Pressure drop across the intercooler is half of the battle! The other half is Temperature drop / Cooling of the charged air!

Now, the other question in determining a good intercooler core/design is "What are the inlet/outlet temps on the aftermarket FMIC's?"

Basically, "How well do these things really cool?"

I said it before and I'll say it again check out this link and decide for yourself.

https://www.evolutionm.net/forums/sh...3&postcount=50

Because in a "Perfect World" we all know an "Air to Air" intercooler would mean having 100% "Cooling Efficiency" with a 0(Zero) "Pressure Drop" across the core.

 

My point was, people are talking like the Buschur has .84 drop so there for they should see thier boost drop. They are not taking into consideration the stock one has more pressure drop. Know what I mean?

 

I actually can't understand what you are talking about, and I doubt I ever will, so I give up.

 

what the hell are u talking about? the stock has more pressure drop? u really have not a clue in what u are saying.

 

I have to agre with the guys saying that boost shouldn't drop unless whith what happened with me and i descovered it later on. If u change ur IC and u still have a stock Turbo and u enlarged ur IC pipes thenn u r loosing so if ur turbo is stick i agree on a bigger IC but stock pipd