twin ati intercoolers vs fmic
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From: Jacksonville, FL
twin ati intercoolers vs fmic i want to know all the benifits of using a fmic instead of the twin high flow's that ati uses...are the intercooler's included in the "d1-sc race kit?" i'm thinking about doing this but i don't like the way the fmic's look on a formula...i'm just wondering how much i am leaving on the table by staying with the twins...
Hey there... Okay.. I've been running my Twin Intercoolers for a while now and they perform great.. Going WOT on the hywy with a long pull in 3rd and 4th my temps jump about 20 to 35 deg F on a 70 deg day. That's at 11psi of boost and over 600 RWHP.. I recently helped my buddy, 2002CamaroSS do a tune on his FMIC. I was seeing a increase of temps close to mine but not as much. He's seeing about 6 to 7 psi of boost and I saw temps jump about 20 deg F above where they were before.. A FMIC does a better job of keeping the temps cooler, but it's not substaintial... YEs I'm seeing more temps, but I'm running more boost..
Hope this helps a little bit
Clint
Hope this helps a little bit
Clint
I know that when you see more boost, You see more temps. The great thing about the FMIC kit versus the Twin kit is that with more boost, the increase in temp is less. The effecientcy of the FMIC over the two twins is better. So it may look as though right now the ratios in temps are about the same, but put more boost on the FMIC car, and it will be a difference story. More surface area to cool the charge.
Rick
Rick
Originally Posted by Rick@Synergy
I know that when you see more boost, You see more temps. The great thing about the FMIC kit versus the Twin kit is that with more boost, the increase in temp is less. The effecientcy of the FMIC over the two twins is better. So it may look as though right now the ratios in temps are about the same, but put more boost on the FMIC car, and it will be a difference story. More surface area to cool the charge.
Rick
Rick
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Depending on how much boost you are running the twin intercoolers can become a restriction so while your blower could be seeing say 16 psi your motor may only be seeing 10 psi. But that can be an issue with any intercooler that is not sized properly.
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Yes, that is the reason why most people do away with the twins. The surface area is the key to proper cooling.
Its hard to have alot of dyno charts with 16-18 psi cars. But for comparisons, we have a car doing 13psi on a D1sc with our FMIC doing 687 at the wheels right now. Of course heads/cam and built bottom end. But temps stay pretty close to ambient all the time. Even on my turbo car with 10psi, if it was 80* outside, I would see about 90-95 under hard boost and thats going through all the gears.
Rick
Its hard to have alot of dyno charts with 16-18 psi cars. But for comparisons, we have a car doing 13psi on a D1sc with our FMIC doing 687 at the wheels right now. Of course heads/cam and built bottom end. But temps stay pretty close to ambient all the time. Even on my turbo car with 10psi, if it was 80* outside, I would see about 90-95 under hard boost and thats going through all the gears.
Rick
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Joined: Nov 2001
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From: Bellevue, Wa
my buddy had the twins and just recently switched to the fmic. i will see if i have any of his pre fmic logs on my laptop and then compare them to now.
seat of the pants the car is much stonger now with the fmic. we will be tuning it again in a few weeks to see how much power he gained. was at 567rwhp/560rwtq on a dynojet last time.
seat of the pants the car is much stonger now with the fmic. we will be tuning it again in a few weeks to see how much power he gained. was at 567rwhp/560rwtq on a dynojet last time.
FMIC all the way. it just makes sense. if you only run 8-10 psi, the twin little gimmicks are fine. but if you want bigger boost and a blower that turns big cfm (1200+ cfm) then the FMIC is the only way to go. no point in turning a bunch of blower rpm only to loose the forced air in the intercooler.
I think this is related to the topic = How much would the price difference between the two (purchaseing FMIC or twins and installing them)? Really want to do I/C on my car just exploreing my options!!
you can find takeoff twins for about $500
a OBX front mount, with mild steel piping would run you about the same.
a good frontmount, and aluminum/stainless piping would run you a good bit more, but you get what you pay for sometimes
Ryan
a OBX front mount, with mild steel piping would run you about the same.
a good frontmount, and aluminum/stainless piping would run you a good bit more, but you get what you pay for sometimes
Ryan
Originally Posted by musicmaker1586
I think this is related to the topic = How much would the price difference between the two (purchaseing FMIC or twins and installing them)? Really want to do I/C on my car just exploreing my options!!
Our FMIC kits with the front mount IC, Stainless steel mandrel pipings, all couplers and t-clamps are pretty much in stock running you about 999.99
Rick
I was told by ATI that the Twin Intercoolers are good to about 1200 CFM to be effecient.. Basicly a P1SC Blower.. D1 or Bigger your twin intercoolers become less eficent.. This is one of the reasons I went with a Meth Kit..
Clint
Clint
Interesting discussion....I still have my twin's in place. On my stock bottom end I made 587 rwhp at 12 PSI. My W2W 408 see's 15 PSI at 6500 roughly. It will be on the dyno on Saturday so I'll see what that yields then. It will probably be north of 650 rwhp. My IAT's are a problem....30 degree jump at 12PSI. After I finish tuning the in street trim Saturday, I have a little plan 
to control IAT's when your looking for power and efficiencies.....I'll let you know how it works out.
to control IAT's when your looking for power and efficiencies.....I'll let you know how it works out. 
I remember reading on one of the vette boards that said ATI is supposed to be coming out with some new improved twins that are 4.5" vs 3.5". Does anyone have specifics on this?
Originally Posted by Gary98Z
I remember reading on one of the vette boards that said ATI is supposed to be coming out with some new improved twins that are 4.5" vs 3.5". Does anyone have specifics on this?