Basic MS3 Modifications

[MS3077]

CAI imo on a turbo car is pointless .... the turbo heats up the air anyways
the intercooler cools it down afterwards.

as for the oil filters ... just follow the cleaning directions and you'll be fine. i've been using oiled filter for years and never had a single issue. Even if you get some oil your MAF you can just clean it off. But i never had a problem with oil on my MAF, just follow the cleaning directions and don't over do it with the oil (light thin coats) and your MAF will stay clean

+1
Thank you!

 

[pjm1957]

CAI vs SRI

I am intrigued by the CAI/SRI debate.

Air is drawn into an intake, compressed in the turbocharger, cooled by the intercooler, and then stuffed into the cylinders of the engine. By reducing the temperature of the incoming air, the intercooler increases the air's density, meaning there are more molecules of air to combine with gasoline, thereby allowing the engine to burn more fuel and generate additional power.

If the intercooler reduces the temperature of intake air, isn't a COLD air intake redundant? Don't the real improvements from intake modifications to a turbocharged engine result only from the fact that the engine breathes ("inhales") more easily?

 

[chacon101]

You are assuming that the intercooler is effecient enough to get the lowest possible temp regardless of the air temp coming in. Since the IC is not effecient like that, it would just make basic sense that pulling in colder air (even if by several degrees) would allow the IC to cool the air down that much more as it passes through.

 

[pjm1957]

Cai/sri

OK. Do turbocharged engines generate significantly more power in winter than they do in summer? The intake air is significantly colder in January than it is in July.

 

[MicaSp33d]

i seen a video of the engine of a GTR(i think) on youtube and the turbos where getting red hot. I remember on some other tread someone took temp reading from the turbo after a couple of mins of sprinted driving and the turbo temp was 300-400 plus so this is way it leads me to believe that a CAI would not make any noticeable difference.


if i can find the vid i post.

 

[chacon101]

I have never tested this but from what people have mentioned on the forum, yes.

This is why many people wanted to purchase a FMIC or upgrade the TMIC because of hot weather....like where I am in Tampa. It hit 90 degrees today I think.

 

[JDM Sam]

There was a whole magazine article that settled the claim do cold air intakes help on turbocharged cars.

Lets say the turbo heats up ambient air 20 degrees. Air temp from a CAI is 70 and the SRI is 85. Theoretically inlet air temperature will be 90 from the CAI and 105 from the SRI. Factor in a theoretical intercooler cooling temperatue drop of 20 degrees and you are back at square 1 of the drawn ambient air from the intake.

15 degrees measured on the intake air temperature sensor will affect the timing advance and thus power output.
If the SRI is a well designed and located isolated from heat, the gains will be neglible.

Pricewise, Fujita makes a CAI around $200 and the filter is a dry type element.

 

[MS3077]

There was a whole magazine article that settled the claim do cold air intakes help on turbocharged cars.

Lets say the turbo heats up ambient air 20 degrees. Air temp from a CAI is 70 and the SRI is 85. Theoretically inlet air temperature will be 90 from the CAI and 105 from the SRI. Factor in a theoretical intercooler cooling temperatue drop of 20 degrees and you are back at square 1 of the drawn ambient air from the intake.

15 degrees measured on the intake air temperature sensor will affect the timing advance and thus power output.
If the SRI is a well designed and located isolated from heat, the gains will be neglible.

Pricewise, Fujita makes a CAI around $200 and the filter is a dry type element.

Guess that's why my MS3 with cobb sri pulls on MS3's with cai.
What you posted was just another theory out there. No proof.

 

[lestat13]

Guess that's why my MS3 with cobb sri pulls on MS3's with cai.
What you posted was just another theory out there. No proof.

I have also heard this theory. I will neither 100% accept or deny this. I have seen articles and tests in magazines where the CAI maybe got 1-3whp extra on a dyno, but while being driven on the street I have heard it makes no difference. Also, just because an intercooler can cool 175-160 degrees, doesn't necessarily mean that it will also account for a 15 degree drop when the temp changes. It might only cool 165-155.