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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Spearco Tested



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      09-24-2007, 08:51 AM   #111
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Quote:
Originally Posted by e.n335 View Post
Nobody buys an Intercooler to lower the oil temps. The lowered oil temps indicate that the engine runs cooler and more efficient.
I think we are all looking at this the wrong way...
Doesn't the intercooler make a cooler = denser air (more oxygen) that goes into the intake manifold which , when burned makes more power which in turn makes the engine generate more heat?

A poor intercooler wouldn't necessarily make the car run hotter it would just limit the power it can generate by pulling timing, lowering the boost when it detects detonation.

A good intercooler allows the car to run higher (non-detonating) boost. Basically your engine will generate more power and thus more heat because it's using that nice cool air.

In other words, we should be looking at getting a better cooling system for our cars, yes intercoolers are nice but in the end, I think you will be aggravating the overheating issues.

Last edited by Dr_Dirt; 09-24-2007 at 09:25 AM..
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      09-24-2007, 09:18 AM   #112
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Originally Posted by jam0321 View Post
The Spearco IC will not induce more lag as it is not an oversized piece. An according to M&M's data, the reduced pressure loss from the upgraded IC eliminated the need for a LBT map for altitude, which seems to be this guys issue.
Sorry for not being clear. My point is that a lot of things can and may improve boost.

A high flow cat removed my need for LBT but also SPED up the spool. Correct me if I'm wrong, but isn't the Spearco piece that you sell a little deeper than stock?
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      09-24-2007, 09:33 AM   #113
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Well, yeah, maybe it's a wrong way to look at it, what does not necessarily mean either statement is wrong. So let's do the math, just a really easy one:

Generating a certain power output (let's call the amount of it HP) in an internal combustion gasoline turbocharged engine needs a specific amount of gasoline (G) and a specific amount or volume of oxygen (O) present in a specific amount of air pumped in the engine by turbochargers throug an intercooler I under certain pressure P. Lets suffix everything OEM 1 and aftermarket 2.

Now let's count with one specific map in the ECU, one specific HP, what means G and O are constant. What varies this time is that pressure P.

Lets say the OEM intercooler I1 has lower efficiency, aftermarket intercooler I2 has it higher, what results in cooler air entering the engine. But the amount of oxygen O is constant, so if we have intake temperature T1>T2, we will also have air pressure P1>P2, while the O and HP will be still the same. But with higher P1 the efficiency of the engine is lower, as U consume more energy to press the air inside the valve. That more energy results in more heat. So with I2 U are gonna have lower T2 = lower P2 = lower engine heat while maintaining the same output.

Clearer now?

PS: this way U can generate more power with I2 assuming P=const, T1>T2 -- G1<G2 -- HP1<HP2, U can put more gas and burn it inside the cylinder, but this needs some support on the ECU side, w/o it the gains U see are the result of some preset tolerance in the ECU.
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      09-24-2007, 01:23 PM   #114
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higher pressure or coolr air = more oxygen, dont know how you came to the conclusion oxygen is a constant when those are changing, i dont really know what your talking about though or trying to prove as i just skimmed your post lol, but that parts def thumbsdown

also in the case of cooler air or more pressure, fuel would not be constant either as more would be injected
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      09-24-2007, 01:29 PM   #115
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Quote:
Originally Posted by Dr_Dirt View Post
I think we are all looking at this the wrong way...
Doesn't the intercooler make a cooler = denser air (more oxygen) that goes into the intake manifold which , when burned makes more power which in turn makes the engine generate more heat?

A poor intercooler wouldn't necessarily make the car run hotter it would just limit the power it can generate by pulling timing, lowering the boost when it detects detonation.

A good intercooler allows the car to run higher (non-detonating) boost. Basically your engine will generate more power and thus more heat because it's using that nice cool air.

In other words, we should be looking at getting a better cooling system for our cars, yes intercoolers are nice but in the end, I think you will be aggravating the overheating issues.

actually youve totally gone off the track, one big way your engine heats up (edit: in this context!) is from pulled timings, less advance = higher EGTs which will heat the turbos up, which will heat the oil and coolant


i would be willing to bet the car fitted with a really shitty intercooler making less power at the same boost would run hotter than the car with a much better intercooler making more power


that said, the stock intercooler is NOT shitty, and the aftermarket ones are not that much better

so no a better intercooler is not going to heat the engine up do to more oxygen and fuel being combusted

Last edited by 533ogetnom; 09-24-2007 at 02:09 PM..
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      09-24-2007, 01:51 PM   #116
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Montego, if U're too lazy to think or U have no hardware to do it, just go f*ck yourself and dont hijack all the threads with your BS.

For the rest of U who do care to know - As I mentioned - it's a REALLY REALLY SIMPLIFIED explanation of what's going on in the engine and maybe why get's the engine cooler with better IC. It was demonstrated by plenty of users, confirmed by multiple manufacturers, proven mathematically or whatever, but there's simply not enuff for the most-f*cking-inteligent bimmer user on the world, right, 533ogetnom?

PS: Admins, moderators, PLS PLS exchange Terry for this piece of azz. I choose the lesser evil...
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      09-24-2007, 01:58 PM   #117
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Quote:
Originally Posted by judec View Post
Montego, if U're too lazy to think or U have no hardware to do it, just go f*ck yourself and dont hijack all the threads with your BS.

For the rest of U who do care to know - As I mentioned - it's a REALLY REALLY SIMPLIFIED explanation of what's going on in the engine and maybe why get's the engine cooler with better IC. It was demonstrated by plenty of users, confirmed by multiple manufacturers, proven mathematically or whatever, but there's simply not enuff for the most-f*cking-inteligent bimmer user on the world, right, 533ogetnom?

PS: Admins, moderators, PLS PLS exchange Terry for this piece of azz. I choose the lesser evil...
where exactly in my response to you did i say anything about cooler engines hotter engines or anything of the sort

i just corrected your error in logic thinking that oxygen remained constant when temperature changed



edit: since you gave me shit for no reason, i actually bothered to read your post rather than skim it, and its the same completely deluded stuff as always

your basically saying that since the stock cooler is hotter, more pressure is required to get the same amount of air into the cylinders and make the same power, and that because of this the engine is less effecient, thus making it hotter

true in theory (sort of, not even completely), not in practice when you have many other forces governing engine temperature at MUCH MUCH MUCH higher thermal amounts

like timing


i dont really care, and i hope most people dont put much weight in the few people that claim lower temps with absolutely no data to back it up, just like i would hope no one puts much faith in butt dynos



finally im not exactly sure how im hijacking this thread, when its about the spearco intercooler and its performance (or lack there of)
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      09-24-2007, 03:26 PM   #118
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Quote:
Originally Posted by 533ogetnom View Post
actually youve totally gone off the track, one big way your engine heats up (edit: in this context!) is from pulled timings, less advance = higher EGTs which will heat the turbos up, which will heat the oil and coolant


i would be willing to bet the car fitted with a really shitty intercooler making less power at the same boost would run hotter than the car with a much better intercooler making more power


that said, the stock intercooler is NOT shitty, and the aftermarket ones are not that much better

so no a better intercooler is not going to heat the engine up do to more oxygen and fuel being combusted
It's simple for you to understand. All things being equal, when your engine is making more power it generates more heat.
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      09-24-2007, 03:44 PM   #119
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Quote:
Originally Posted by Dr_Dirt View Post
It's simple for you to understand. All things being equal, when your engine is making more power it generates more heat.
yea it does, but what im trying to tell you is it will run hotter even with less power if the timings are way back, and the extra heat generated is nothing compared to that, i know it doesnt make sense since one is making more heat, "how could it be hotter if its making less heat and power" but it is, in simple terms because its being used to drive the wheels rather than being put into the coolant
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      09-24-2007, 03:46 PM   #120
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Quote:
Originally Posted by leftcoastman View Post
Sorry for not being clear. My point is that a lot of things can and may improve boost.

A high flow cat removed my need for LBT but also SPED up the spool. Correct me if I'm wrong, but isn't the Spearco piece that you sell a little deeper than stock?
what is an LBT? (lower boost target??
and the speeding uo the turbo spools was an added benifit?


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      09-25-2007, 12:13 AM   #121
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Quote:
Originally Posted by leftcoastman View Post
isn't the Spearco piece that you sell a little deeper than stock?
yes, about 2" thicker
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      09-25-2007, 01:41 AM   #122
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Quote:
Originally Posted by jam0321 View Post
yes, about 2" thicker
How does that reconcile with your statement on the last page?

"The Spearco IC will not induce more lag as it is not an oversized piece."

I thought thicker means oversized?
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      09-25-2007, 03:18 AM   #123
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i thought spearco was the brand of a racing seat till now
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      09-25-2007, 04:52 AM   #124
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it's Sparco
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      09-25-2007, 05:32 AM   #125
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Quote:
Originally Posted by PakmanE90 View Post
i thought spearco was the brand of a racing seat till now
lets play hangman

there both equally _ _ _ _ _
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