SRI Diameter Factor

[urville]

Searched first. Wondering if there is any drawback, *I assume not* but these engines can be weird it seems soemtimes, or if there is benefit to a 3.25 intake pre-BT? Sure Aeros ID325 vs say a Corksport SRI? Maybe more importantly, is it in order of being worth another $200? Considering the ultimate goal is going BT... So really, if i am planning on BT, am I gonna buy this anyway down the line, or is this mincing a tiny return? I assume more air is better on BT but... dollars to gains speaking...

[xI Leveler Ix]

I was thinking this also. What the point in having a bigger MAF and TIP if it just constricts itself down at our little K04 which I believe is 2" or 2.25"...

[captain slow]

Good god guys.
Lex has done some work on this. At least I think it was him. Don't know where the thread is though. Bigger MAF FTW

[helmetface]

OP do you already have an aftermarket intake?

How far down the road is BT?

If it's more than a year, AKA -

"I'll definitely go BT this winter"
*Winter comes*
"I'll definitely go BT this summer" etc...

Then get a used 2.5" intake setup...if you see yourself going BT sooner than later go for 3+ now.

[urville]

Originally Posted by captain slow Good god guys. Lex has done some work on this. At least I think it was him. Don't know where the thread is though. Bigger MAF FTW

Yeah, I couldnt find anything too relevant, I'll try by his name though, i didnt have that. Just wasnt sure it was worth 200 more dollars.

Originally Posted by xI Leveler Ix I was thinking this also. What the point in having a bigger MAF and TIP if it just constricts itself down at our little K04 which I believe is 2" or 2.25"...

2" i thought or maybe 2.1 something, not enought o be hugely different if i rememebr right, I may not.

Originally Posted by helmetface OP do you already have an aftermarket intake? How far down the road is BT? If it's more than a year, AKA - "I'll definitely go BT this winter" *Winter comes* "I'll definitely go BT this summer" etc... Then get a used 2.5" intake setup...if you see yourself going BT sooner than later go for 3+ now.

Corksport SRI... I was trying to pull the trigger on parts in Feb and install once it warms up. May/Juneish

A year lets say.... yeah I get ya, thats why I was thinking well if it causes issues for any reason, and as life does, some life comes up... Will it pose an issue? Is it even worth it...

[helmetface]

Originally Posted by urville Will it pose an issue? Is it even worth it...

Issues? Likely not, as long as your MAF is dialed in accurately. However on the K04 you won't benefit from a "BT sized" inlet.

K04 don't flow no mo'

[silentwolf8]

How bout you get your 2.5 intake system.. when you decide to go BT down the road. Buy a bigger MAF intake and sell the current setup at the time.. problem solved

[chuckms6]

Use a larger intake. A turbo will have an easier time “sucking” the fresh air through a larger intake. The sky’s the limit here, go as large as your vehicle is able to fit.

stratified auto

[aggierandy]

Blog : The effects of intake air temperatures on turbocharged vehicles : Stratified Automotive Controls

Bigger intake = always better

"Use a larger intake. A turbo will have an easier time “sucking” the fresh air through a larger intake. The sky’s the limit here, go as large as your vehicle is able to fit." Lex

Edit: beat me to it. chuckms6

[xI Leveler Ix]

Originally Posted by helmetface Issues? Likely not, as long as your MAF is dialed in accurately. However on the K04 you won't benefit from a "BT sized" inlet. K04 don't flow no mo'

This is what I was talking about. The SURE Full3 Gt or something is a OE MAF size but a 3" TIP, It won't flow any better because the k04 is already flowing as much as it can. Correct?

[helmetface]

I understand what you guys are saying above about "the sky's the limit" and yes I've read that on Stratified, however..going up in size after a certain extant and the gains are negligible..the K04 can only flow so much.

[chuckms6]

Originally Posted by helmetface I understand what you guys are saying above about "the sky's the limit" and yes I've read that on Stratified, however..going up in size after a certain extant and the gains are negligible..the K04 can only flow so much.

but if he is planning on going bt he might as well make one purchase and be done with it. its not going to hurt him.

[helmetface]

Originally Posted by chuckms6 but if he is planning on going bt he might as well make one purchase and be done with it. its not going to hurt him.

Do you know how often people say "I'm going BT" and it never happens?

I'm just saying..the re-sale value on our products, if in good condition; is quite high. OP can do whatever. But if it were me and BT wasn't being saved up for in an account that was nearly there..I'd just go for a normal intake and go from there.

[aggierandy]

Originally Posted by helmetface I understand what you guys are saying above about "the sky's the limit" and yes I've read that on Stratified, however..going up in size after a certain extant and the gains are negligible..the K04 can only flow so much.

If he never goes big turbo, maybe he has a small gain for the extra cost. If he does go big turbo then he is set.

To answer the OP question of are there any negatives. No, unless you go so big that you have to relocate the ECU. Then its not really a negative, just another step in the install.

[helmetface]

Originally Posted by aggierandy If he never goes big turbo, maybe he has a small gain for the extra cost. If he does go big turbo then he is set. To answer the OP question of are there any negatives. No, unless you go so big that you have to relocate the ECU. Then its not really a negative, just another step in the install.

Then, get a JBR intake

Or go custom:



Soccer ball for reference..ha

[aggierandy]

Originally Posted by helmetface Then, get a JBR intake Or go custom: Soccer ball for reference..ha

I love that intake. I would fuck that intake.

Sent from my DROIDX using Tapatalk 2

[urville]

Originally Posted by helmetface I understand what you guys are saying above about "the sky's the limit" and yes I've read that on Stratified, however..going up in size after a certain extant and the gains are negligible..the K04 can only flow so much.

What I see though is, it wont hurt and I plan on BT, so... less work to just buy now and it gives me incentive not to put off going BT at all...

[Lex]

Here's a challenge for the ultimate intake if you don't live in a very rainy area. What is the largest CAI you can fit on the car.

And yes, bigger is better in this case

[anavrinIV]

Originally Posted by Lex Here's a challenge for the ultimate intake if you don't live in a very rainy area. What is the largest CAI you can fit on the car. And yes, bigger is better in this case

challenge accepted. I believe you could easily fit a 6" intake or larger if you moved the battery box. Hell, the limit then becomes the space between the engine and firewall. Use the ducting space in the hood to route cold air directly do the filter,

[ms3rick]

Originally Posted by urville Searched first. Wondering if there is any drawback, *I assume not* but these engines can be weird it seems soemtimes, or if there is benefit to a 3.25 intake pre-BT? Sure Aeros ID325 vs say a Corksport SRI? Maybe more importantly, is it in order of being worth another $200? Considering the ultimate goal is going BT... So really, if i am planning on BT, am I gonna buy this anyway down the line, or is this mincing a tiny return? I assume more air is better on BT but... dollars to gains speaking...

I cannot read anything post by you larger then three words, your Avi is just too intresting!

[BottleOfCola13]

Lex - So if building a custom SRI size doesnt matter? (yeah yeah hahaha)
Now that that's out of the way...How bout length of the SRI?
Only reason I ask is that I too am pursuing an SRI but going custom.
I'm nowhere close to goin' BT but am considering 3" diameter as well as OP.
Been searching and haven't found much in terms of general length of an SRI.

[aggierandy]

Originally Posted by BottleOfCola13 Lex - So if building a custom SRI size doesnt matter? (yeah yeah hahaha) Now that that's out of the way...How bout length of the SRI? Only reason I ask is that I too am pursuing an SRI but going custom. I'm nowhere close to goin' BT but am considering 3" diameter as well as OP. Been searching and haven't found much in terms of general length of an SRI.

As far as fluid dynamics are concerned, you would want to minimize the length to reduce friction in the pipe which builds head. That said, the amount of heat would be negligible. However it needs to be long enough to get a filter clear of stuff.

Length isn't really a significant factor. Location is much more significant. Get the filter in a stream of cool fresh air and it will do more than having a shorter intake.

[BottleOfCola13]

Originally Posted by aggierandy As far as fluid dynamics are concerned, you would want to minimize the length to reduce friction in the pipe which builds head. That said, the amount of heat would be negligible. However it needs to be long enough to get a filter clear of stuff. Length isn't really a significant factor. Location is much more significant. Get the filter in a stream of cool fresh air and it will do more than having a shorter intake.

Thank You! I know that the heat is always an issue, this is why a friend and I are building one from carbon fiber. I just wanted to make sure that the length of the SRI wasn't a Performance Robbing factor. We have the CF and the know-how of using the CF...just want to make sure it's right the 1st time. It's no fun trying to make CF shorter

The MAF housing may be a different story...3" as well (obviously) but have been told it needs to be precise? I know it obviouslt needs to maintain a circular 3" diameter but how forgiving is it??

[anavrinIV]

Originally Posted by BottleOfCola13 Thank You! I know that the heat is always an issue, this is why a friend and I are building one from carbon fiber. I just wanted to make sure that the length of the SRI wasn't a Performance Robbing factor. We have the CF and the know-how of using the CF...just want to make sure it's right the 1st time. It's no fun trying to make CF shorter The MAF housing may be a different story...3" as well (obviously) but have been told it needs to be precise? I know it obviouslt needs to maintain a circular 3" diameter but how forgiving is it??

go blow-through. problem solved.

[BottleOfCola13]

You raise a good thought.
Time for more researching on this option.
Thank you for the suggestion.

[anavrinIV]

Originally Posted by BottleOfCola13 You raise a good thought. Time for more researching on this option. Thank you for the suggestion.

there have been a few threads about it on here recently. it's easy to set up, treadstone has all the pieces you need to do it. Just tune the diameter in your map and you're good to go. I'm planning on doing this when to do an FMIC since it's just a maf housing (I'm going with the 3.5"), air straightener, and reducers/copulers

[BottleOfCola13]

Originally Posted by anavrinIV there have been a few threads about it on here recently. it's easy to set up, treadstone has all the pieces you need to do it. Just tune the diameter in your map and you're good to go. I'm planning on doing this when to do an FMIC since it's just a maf housing (I'm going with the 3.5"), air straightener, and reducers/copulers

Ultimately, the plan is to fab out all Carbon Fiber/Baysalts piping. (hybrid weave)
This being FMIC piping to go along with the CF/Baysalts SRI.
Hope to be able to build the entire thing.
I do know of Treadstone and that is where I was planning on goin as a plan B.
BT is a maybe but still unsure (need to save that $$$).
I appreciate your insight, it's been nothin but a help in the right direction.
Aftre some more researching this project shall be underway.
Hopefully OP gets use of this as well.

[urville]

Originally Posted by aggierandy As far as fluid dynamics are concerned, you would want to minimize the length to reduce friction in the pipe which builds head. That said, the amount of heat would be negligible. However it needs to be long enough to get a filter clear of stuff. Length isn't really a significant factor. Location is much more significant. Get the filter in a stream of cool fresh air and it will do more than having a shorter intake.

Would it follow then that too many turns also does this?

[Lex]

Some food for thought. This car uses a MAF sensor. Once you go much above 3.5" diameter MAF housing you may start having issues with reading low airflow values and idle and low flow areas may suffer.

Second food for thought. Pressure. Try and get as high a pressure the inlet to this pipe as possible. Aka ram air.

Thirdly, get air that is as cool as possible.

Finally, the air filter surface area and filtration media does matter as it can cause a restriction and I have just concluded some testing on this. Air filter alone can cost you 5-10 g/s on a maxed out K04.

[anavrinIV]

Originally Posted by Lex Some food for thought. This car uses a MAF sensor. Once you go much above 3.5" diameter MAF housing you may start having issues with reading low airflow values and idle and low flow areas may suffer. Second food for thought. Pressure. Try and get as high a pressure the inlet to this pipe as possible. Aka ram air. Thirdly, get air that is as cool as possible. Finally, the air filter surface area and filtration media does matter as it can cause a restriction and I have just concluded some testing on this. Air filter alone can cost you 5-10 g/s on a maxed out K04.

what would you think about a 3.5" blow-through MAF with a 4" inlet and matching amsoil cone filter?

[exentix]

All I know is I noticed a huge difference from my sure Sri/tip combo to the jbr 3.5" 1 piece. Lex is starting my tune now and the first thing he mentioned was how well its flowing on the ko4 with that intake and a Cp-e dp. I say biggers better

[BottleOfCola13]

Originally Posted by anavrinIV what would you think about a 3.5" blow-through MAF with a 4" inlet and matching amsoil cone filter?

Lex - also interested in this.

[helmetface]

Originally Posted by BottleOfCola13 Lex - also interested in this.

Then wait for his reply..no need for a second mention.

[BottleOfCola13]

my apologies.

[urville]

Originally Posted by exentix All I know is I noticed a huge difference from my sure Sri/tip combo to the jbr 3.5" 1 piece. Lex is starting my tune now and the first thing he mentioned was how well its flowing on the ko4 with that intake and a Cp-e dp. I say biggers better

Its incredible to me that you can go from 3.5 to 2.5 at the end... im not questioning, just registering that its funny how sometimes things just do the opposite of what you expect.

You have the honeycomb straightener?

[Lex]

Originally Posted by BottleOfCola13 Lex - also interested in this.

It depends on what you want. The blow through also has to be setup properly to not give you strange readings. I think that for most practical setups a 3-3.5" with a nice flowing big filter is good. If you can get some ram air effect in there or cold air that's even better.

[exentix]

Originally Posted by urville Its incredible to me that you can go from 3.5 to 2.5 at the end... im not questioning, just registering that its funny how sometimes things just do the opposite of what you expect. You have the honeycomb straightener?

Nope.

[BottleOfCola13]

Lex - I guess what I'm asking is what is the better option.
I know that they both have their pluses and minuses.
From a custom set up standpoint what would be the more practical method.
I plan on getting a tune after the Carbon Fiber/Baysalts piping is finished.
From a tunability stand point, I want to avoid any headaches (if possible) for myself as well as whomever else may be tuning my car.
Doin some research but some of the stuff still doesn't make sense.
Thank you for your help thus far, it's greatly appreciated.

[Lex]

Just make sure the pipe is not too short where the MAF sits and there are no sharp turns to cause airflow issues.

Finally, note that if you run 2.5" IC piping this won't get you too much airflow headroom in terms of what the MAF will be able to read.

[Dr. Speed]

Originally Posted by aggierandy I love that intake. I would fuck that intake. Sent from my DROIDX using Tapatalk 2

You probably wouldn't have very much fun with that... Unless you have a 3" diameter penis, in which case I don't envy your wife/gf