[TheMidnightNarwhal]

Originally Posted by KnighTT

I'm not foolish though to piss away a 3 year warranty. I have no right to yell at a manufacturer when they don't replace something, under warranty, when I knew full well what the warranty stipulations were on day 1..

Actually pretty sure in the states you DO have the rights to claim warranty even if you void it if you can prove it doesn't affect or caused it to damage the item.

But until we get an explanation as to why this actually voids DAW warranty but not another turbo manufacturer I just don't get it.

[RJC612]

Originally Posted by type-dRew

Yeah i like upgrading exhausts, but when you have 2 2.3 inch pipes(4.6inches total) and swap it for a single 3.5inch pipe. You dont have more total flow. I dont see the benefit aside from losing the cats and resonator, which can be done with the stock system also.

Imagine doing a twin turbo 5.0 mustang and running 4 inch downpipes into a single 4 inch exhaust. Does it make sense on that application? No? So why do it here.

Ill upgrade the exhaust when a reasonably priced true dual 3inch system is available. Closest now is an AFE system for $1200 @ 2.75inch, which is pretty damn good but i cant justify that price and again, the cars just dont respond to upgraded exhausts as much as other stuff. Im a big advocate for the best exhaust is no exhaust on a turbo car, but these cars just dont seem to gain much from running even open downpipes as much as id think with big power.

Actually, that isnt how that works. Mathematically, you are wrong.

2.3^2 × pi x 2 = 33.22 where pi = 3.14

3.5^2 × pi = 38.47 where pi = 3.14

so the potential max flow of a 3.5 inch pipe to exit exhaust gasses is greater than two 2.3 inch pipes.

[b92]

Originally Posted by RJC612

Actually, that isnt how that works. Mathematically, you are wrong.

2.3^2 × pi x 2 = 33.22 where pi = 3.14

3.5^2 × pi = 38.47 where pi = 3.14

so the potential max flow of a 3.5 inch pipe to exit exhaust gasses is greater than two 2.3 inch pipes.

[lwgrenier]

Originally Posted by RJC612

Actually, that isnt how that works. Mathematically, you are wrong.

2.3^2 × pi x 2 = 33.22 where pi = 3.14

3.5^2 × pi = 38.47 where pi = 3.14

so the potential max flow of a 3.5 inch pipe to exit exhaust gasses is greater than two 2.3 inch pipes.

You got the wrong equation but the right idea. You should be using the radius.

[RJC612]

Originally Posted by lwgrenier

You got the wrong equation but the right idea.

what you talkin bout willis? This is simple stuff A=piD of a circle or pir^2. the area of a circular cross section of one 3.5 inch pipe is larger than double the area of a cross section of a 2.3 inch pipe. Area correlates to flow, imagine its water in a pipe or electrical current through a wire. 3.5 wins

[lwgrenier]

Originally Posted by RJC612

what you talkin bout willis? This is simple stuff A=piD of a circle or pir^2. the area of a circular cross section of one 3.5 inch pipe is larger than double the area of a cross section of a 2.3 inch pipe. Area correlates to flow, imagine its water in a pipe or electrical current through a wire. 3.5 wins

A=pi*r^2=1/4*pi*d^2. willis. you're right that it is larger, but only by one square inch or so.

[RJC612]

Originally Posted by b92

What so funny? put more simply, a 2.25 inch pipe flows 408 cfm (x2 = 816 cfm) and a 3.5 flows 1029 cfm. 3.5 wins no matter how u look at it.

[b92]

Originally Posted by RJC612

What so funny? put more simply, a 2.25 inch pipe flows 408 cfm (x2 = 816 cfm) and a 3.5 flows 1029 cfm. 3.5 wins no matter how u look at it.

I understand the math, I was laughing at the Type D's comment of 2.3+2.3=4.6>3.5

[RJC612]

Originally Posted by lwgrenier

A=pi*r^2=1/4*pi*d^2. willis. you're right that it is larger, but only by one square inch or so.

oh fuck willis! i did fuck that circumference formula into the area one whoopzzzz,

two 2.3 pipes = 8.3

3.5 = 9.62

tehe

[Torgus]

Originally Posted by nissubaru

Those pictures are bullshit. That's not how you use a caliper. He's not even measuring the outsides of the pipes, he's only measuring what he wants to measure.

I was waiting for someone to comment on how fucked that use of calipers was. That is how my 5 year old son would measure because he does not know any better. If that really was Shawn from DAW measuring you should all be very afraid. That is not how you measure with calipers, not even close, Jesus Christ.

Again that warranty language is so fucked it says no one gets to return their turbos: "Discounted items are not eligible for a return, Custom items, or Turbochargers." https://dynamicautowerx.com/return-policy-1

You would think he would have fixed his warranty and return policy that he stole from that UK website by now.


The stock PE exhaust sounds pretty bad ass on my single turbo. I'll swap the cats for resonators next spring most likely. If I was going to upgrade it would be the ATM exhaust which is basically the old HPF design. Sounds awesome, light weight. VRSF is ok but I don't like the sound both street and race don't do it for me. I would get the Corsa over the VRSF exhaust any day of the week and still have a 3.5'' exhaust, the Corsa just sounds that much better and is worth the cost. The ATM will be the loudest but sound the best at wot imo.

People have custom made dual 3'' mandrel bend exhausts made on the e9X platform before, but they are rare, pricey, and I doubt fit all that great.

[Julian2485]

Originally Posted by KnighTT

On a side note, who sells the best turbocharger install kit?

Not looking for the cheapest but the one that comes with the most of what is needed paired with quality.

Mmp does for $150 everywhere else goes for $200 and comes with everything you need. My boy said he could source me a install kit for cheaper with everything i need.

[dsource]

Here's what i used as my install kit. I replaced my coolant lines due to not being able to remove them without destroying them.

Attached is my spreadsheet for the cheapest install kit using FCP parts.

https://drive.google.com/file/d/1KLp...ew?usp=sharing

Originally Posted by KnighTT

On a side note, who sells the best turbocharger install kit?

Not looking for the cheapest but the one that comes with the most of what is needed paired with quality.

[Julian2485]

Originally Posted by Torgus

I was waiting for someone to comment on how fucked that use of calipers was. That is how my 5 year old son would measure because he does not know any better. If that really was Shawn from DAW measuring you should all be very afraid. That is not how you measure with calipers, not even close, Jesus Christ.

Again that warranty language is so fucked it says no one gets to return their turbos: "Discounted items are not eligible for a return, Custom items, or Turbochargers." https://dynamicautowerx.com/return-policy-1

You would think he would have fixed his warranty and return policy that he stole from that UK website by now.


The stock PE exhaust sounds pretty bad ass on my single turbo. If I was going to upgrade it would be the ATM exhaust which is basically the old HPF design. Sounds awesome, light weight. VRSF is ok but I don't like the sound. I would get the Corsa over the VRSF exhaust any day of the week and still have a 3.5'' exhaust.

People have custom made dual 3'' mandrel bend exhausts made on the e9X platform before, but they are rare, pricey, and I doubt fit all that great.

Do you know someone personally that did dual 3" for e90 platform. I was thinking of doing 2.5" or 3" dual to my P.E. mufflers. Any of you guys in nyc i have a 335is muffler for sale.

[RJC612]

[QUOTE=Torgus;25537472]

Originally Posted by nissubaru

The stock PE exhaust sounds pretty bad ass on my single turbo. I'll swap the cats for resonators next spring most likely. If I was going to upgrade it would be the ATM exhaust which is basically the old HPF design. Sounds awesome, light weight. VRSF is ok but I don't like the sound both street and race don't do it for me. I would get the Corsa over the VRSF exhaust any day of the week and still have a 3.5'' exhaust, the Corsa just sounds that much better and is worth the cost.

Agreed Corsa to me is the best sounding i have heard but VRSF street for a moderate street/track build at that price point, well i couldnt say no. The VRSF street idle note is not that much different than stock, its pretty quiet actually after cold start cycle subsides. But at WOT I think it sounds greattt. The race option is too loud for me as I do not want to get pulled over for something so avoidable. Has happened to a few car guys i know here in MA.

[type-dRew]

Originally Posted by b92

I understand the math, I was laughing at the Type D's comment of 2.3+2.3=4.6>3.5

It is pretty funny how the math is right but the practical application doesn't agree with it.

Lets get everyone out here with a twin turbo engine to funnel both 3inch downpipes into a single 4inch instead for the gainz

[Torgus]

Originally Posted by Julian2485

Do you know someone personally that did dual 3" for e90 platform. I was thinking of doing 2.5" or 3" dual to my P.E. mufflers. Any of you guys in nyc i have a 335is muffler for sale.

Not personally. Just google e90 dual 3'' exhaust. There are some you tube videos. It sounds amazing. Like this one:

Starting at turbos:
Dual 3" full radius (not cheated) turbo outlets
Merge to 4" V-band on 6" Cat Inlet
4" Cat out to dual 3" Y-Pipe
Dual 3" exhaust
3" V-band before diff to enable quick straightpipe/muffler swap
3.5" step-up diameter after rear diff

Well I guess that one is not a true dual.



[QUOTE=RJC612;25537606]

Originally Posted by Torgus

Agreed Corsa to me is the best sounding i have heard but VRSF street for a moderate street/track build at that price point, well i couldnt say no. The VRSF street idle note is not that much different than stock, its pretty quiet actually after cold start cycle subsides. But at WOT I think it sounds greattt. The race option is too loud for me as I do not want to get pulled over for something so avoidable. Has happened to a few car guys i know here in MA.

The VRSF is priced right that is for sure and the street version is probably quieter than my PE on start up w/ cold start. It does drop a nice amount of weight too.

The problem with the Corsa is the price is fucked. No one is dropping $1,700 on an exhaust for an n54 when the ATM and VRSF exist in the $700ish range. Excuse me, if you want black tips on your corsa the price is now $2,299.95 Turner has some decent stuff but that price is fucked.

[KnighTT]

Agreed. The VSRF price, and flexible application, makes it a great deal. Even if you just street it, $700 puts it below most everything I have seen elsewhere and there is no questions on quality. Speking of warranties, I think the VSRF comes with a limited lifetime.

[Jeef]

/end exhaust thread.


based off those warranty words, anyone who bought at discount is out of luck?

[type-dRew]

Originally Posted by Jeef

/end exhaust thread.


based off those warranty words, anyone who bought at discount is out of luck?

Honestly dont know when these HAVENT been on sale. So its more confusing.

[KnighTT]

That wording is based on return of the product not warranty.

The three year warranty covers repair or replacement but not a refund. That would make sense on any product though. Well, unless Costco gets in the turbo business. Who let's you return a high performance car part, for a refund, after more than a month of use? In this case, they don't offer refunds at all it appears. That is worth noting if anyone here intends to purchase.

The stipulations discussed here would be in regards to preventing denial of a repair or replacement claim.

[Julian2485]

Originally Posted by KnighTT

That wording is based on return of the product not warranty.

The three year warranty covers repair or replacement but not a refund. That would make sense on any product though. Well, unless Costco gets in the turbo business. Who let's you return a high performance car part, for a refund, after more than a month of use? In this case, they don't offer refunds at all it appears. That is worth noting if anyone here intends to purchase.

The stipulations discussed here would be in regards to preventing denial of a repair or replacement claim.

I actually asked if i purchased these turbos will i get a refund and he said it has to be 14 days from purchase and he knew i was getting it for sale so idk

[nyt]

Some things to keep in mind. The exhaust is 2.5in ID for most of the part that matters. Exhaust charge cools as it gets further downstream, thus requiring less volume. While a 3.5in exhaust is definitely capable of flowing more than 2x2.5 as the area is larger and the wall effect is less pronounced, the difference is trivial. Furthermore, most of the Y pipes directly after the downpipes I've seen on the 3.5" exhausts are not very friendly to flow either.

When I told pure I was running their 600's at 30psi up to 80% WGDC, they were like "that's probably going to make some good power, can't wait to see a dyno". I don't see the point of going with some unknown vs a known reputable shop that does balancing in house when the difference is like $200.

I still have the secondary cats in my exhaust, but I have an elbow and some resonators sitting next to me ready to get installed this weekend if I get over this cold in time. Once those are removed, I'm expecting to have to turn the boost down a bit as there will be more flow available at lower pressure levels.