DO I need a Dyno tune after installing an upgraded Heat Ex-Changer?
12-23-2011, 02:11 PM
#1
1st Gear Member
Thread Starter
Join Date: Dec 2011
Location: Texas
Posts: 90
DO I need a Dyno tune after installing an upgraded Heat Ex-Changer?
If I am just replacing my Roush stock heat ex-changer, will I need a dyno tune on the car? I am just curious since all I am changing is fluid capacity and moving to a more efficient style heat ex-changer.
12-23-2011, 02:15 PM
#2
2nd Gear Member
Join Date: Aug 2010
Location: california
Posts: 200
If you mean intercooler the answer is no, I dumped my Roush for an Afco dual fan, not a problem.
12-23-2011, 02:27 PM
#3
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Location: Temple, TX
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Merry Christmas.
Don
12-23-2011, 02:48 PM
#5
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If the car were to be put on a dyno, do you think there would likely be a gain in RWHP? Cooler intake temp equals more dense air, right?
It's been a WHILE since I was into FI, but I am just thinking that with this change, there will be a bump in power and if not accompanied with the corresponding changes in the fuel, it might (emphasis here) cause a lean condition.
Don
12-23-2011, 03:06 PM
#6
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Location: Honolulu, HI
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You're running FI and would know better than me, but I am thinking there might be more difference than just "only cooler".
If the car were to be put on a dyno, do you think there would likely be a gain in RWHP? Cooler intake temp equals more dense air, right?
It's been a WHILE since I was into FI, but I am just thinking that with this change, there will be a bump in power and if not accompanied with the corresponding changes in the fuel, it might (emphasis here) cause a lean condition.
Don
If the car were to be put on a dyno, do you think there would likely be a gain in RWHP? Cooler intake temp equals more dense air, right?
It's been a WHILE since I was into FI, but I am just thinking that with this change, there will be a bump in power and if not accompanied with the corresponding changes in the fuel, it might (emphasis here) cause a lean condition.
Don
seems like a logical point. but for the sake of discussion, i would like to give my 2 cents.
i have not upgraded my heat exchanger, so i am not 100% sure.
but my theory is this:
you have the same SC pulley, so it is spinning the same, and the same boost level as previously when the engine is cool.
now with the upgraded heat exchanger, when engine is hot, the IAT are not as high as it once was.
so, it wont be retarding timing as much as before.
i dont think you will gain power, but rather your power will stay more constant when hot, instead of losing power when it gets hot.
12-23-2011, 05:00 PM
#7
6th Gear Member
Join Date: Jul 2008
Location: Acworth, GA
Posts: 12,260
No you don't need a new tune.... Especially with a water/air setup. It has nothing to do with the flow of air since its not an air to air intercooler. With a larger heat exchanger there is just more surface area for cooling and more capacity so that your IATs stay cooler for longer due to the higher capacity of coolant/water.
12-23-2011, 09:42 PM
#9
You're running FI and would know better than me, but I am thinking there might be more difference than just "only cooler".
If the car were to be put on a dyno, do you think there would likely be a gain in RWHP? Cooler intake temp equals more dense air, right?
It's been a WHILE since I was into FI, but I am just thinking that with this change, there will be a bump in power and if not accompanied with the corresponding changes in the fuel, it might (emphasis here) cause a lean condition.
Don
If the car were to be put on a dyno, do you think there would likely be a gain in RWHP? Cooler intake temp equals more dense air, right?
It's been a WHILE since I was into FI, but I am just thinking that with this change, there will be a bump in power and if not accompanied with the corresponding changes in the fuel, it might (emphasis here) cause a lean condition.
Don
12-24-2011, 09:58 AM
#10
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Join Date: May 2010
Location: Temple, TX
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