Uh I read what I posted and no where was there anything implied that you would make more hp by adding bigger injectors. My whole point was why and HOW a test pipe works and the fact that it does increase volumetric efficiency. The statement that adding a test pipe does not add more air is simply and GROSSLY wrong. A good dp/test pipe can add upwards of 30whp which is in increase in volumetric efficiency of 3lb min in flow. That is HUGE increase in "air".

I went into detail since the OP clearly stated he was a noob. By redlines assumption adding an intake and exhaust will not require injectors since you are not adding air. This is completely wrong though the first part of the statement is right the back half is wrong.

The main reason why adding parts like a CAI,exhaust, or dp makes measureable and sometimes considerable hp is that you are actually leaning out a pig rich AFR that has come from the factory for durability reasons so that you can help cool the intake temps. I have seen testing on CAI where they lean the AFR out by .5 since you are in fact adding more air. When they adjusted the AFR back to its stock ratio the horsepower measured was almost identical to stock levels.

I am seriously confused why after I posted a statement that could easily be misunderstood and looked wrong and members quickly corrected me in a not so polite fashion that I am getting a bit of hate since I corrected someone that was CLEARLY wrong and I did so in a polite fashion and I atleast added why it was wrong. I thought the point of the forum was to spread fact and make members more educated?


look at your own wording CCA4:

The question was "will adding a test pipe require upgraded injectors?" and the correct answer, provided by redline, is no, because a 3" testpipe behind a stock turbo won't add enough flow to max out the stock injectors.

No the correct answer was not provided by redline. He clearly stated that it would not add enough air to max out stock injectors. He clearly stated it would not add air at all which is what my entire point is.

 

no, i clearly did not state it wont add more air. read how i said it wont really add more air.
it will help the turbo spool faster and hold boost better. but i tell ya what. if someone made a test pipe that adds 30 whp on a k03, they could charge a grand for it. you need to keep these things in mind. a k03 is so small that reducing backpressure wont have a huge affect on anything. most people get a testpipe just to get rid of the cat (on a k03 at least).

but you said you want to spread fact. ok, lets spread some fact.

FACT- adding whatever the **** you want to a k03 turbo will not require injectors (unless its an ecu tune, and i think ive only eard of one of those)

you can throw every bolt on at a k03, it will not need more fuel than the stock injectors can deliver. 5" exhaust, the biggest testpipe available, the fridgedest of cold air intakes, the most efficienct intercooler possible, whatever. a testpipe on a k03 will NOT need bigger injectors. oh, and the ecu would have to be tuned for bigger injectors anyways

 

You can try to twist what you said after the fact but what you posted is wrong. I never once said a test pipe would add 30 whp to a k03. No ******* where. Maybe you need to go back to 2nd grade and get a refresher on reading comprehension. You act like reducing back pressure is what creates hp. It doesn't. Never has and never will. Here is a reverie for you, hold on to your head cause its about to get blown:

By reducing back pressure you increase volumetric efficiency and that increases hp. Reducing back pressure by itself will not make hp. Thus any way you cut your post its wrong. Damn bro, sorry you got so but hurt from it.

Since you wanted to nit pick a test pipe on a k03 think about this for a second. On a stock motor and tune this test pipe alone is good for 10whp. That on a motor lucky to make 100awhp is a 10% increase. A 10% in volumetric efficiency is a considerable amount, alot more then you gave it credit for.

Oh and remember the k04 setup that you knocked. Its together running and preliminary indicators point in excess of 260awhp. I'm pretty sure you said that wasn't going to happen ever right? I hope your ready for a slice of humble pie....

 

Ok man, whatever makes you feel better. When you post videos and dyno sheets of a B5 making 260whp on a K04 I"ll be the first to admit defeat.

 

Wheres the thrread for this k04 build?

 

I am not making a thread. I started a topic regarding a turbo that should be able to make a certain level of whp. Some liked the idea most were pounding the hatorade. Just like this thread has some serious horse **** posted in it about not adding air the same happened to my thread. For some ungodly reason members assumed that since it is a K04 then it is one size turbo but as noted before K04 is simply a class of turbo just like a T28 is a class of turbo. Some T28's will only make about 200whp. Some will make 350whp. It has to do with the compressor and the size of the turbine. Considering that the K04 I am talking about will actually flow 1 lb min more then a GT28RS which has made as much 300whp on 1.8t I had a damn good chance of making 260awhp which was my goal with it.

I live in BFE and considering the only method I have of measuring anything is a Gtech pro I am not tooting my horn just yet. I am currently trying to find a an AWD dyno that is relatively close to my location and all I am going to do is post the dyno.

The turbo is simply not a bolt in. It has to be adapted to the turbo manifold with an adpater and custom DP but both of these are easy to repeat. You also have to get a larger turbo intake pipe. The oil lines and water lines fit perfectly.

As I have already noted as a size a reference:

K04 015 compressor- 38mm inducer and 50mm exducer turbine- 42mm exducer and 46mm inducer
K04 MS3 compressor- 46mm inducer 60mm exducer with extended tips turbine- 45mm exducer and 50mm inducer

The franken K04 made 240 awhp I think. It is considerably smaller then the MS3. Its compressor inducer is 41mm and exducer is 60mm. 5mm difference on a sub 60mm diameter compressor is huge.

It does not matter either that the turbo I am speaking of has already made over 260awhp on another awd car.....


The nice thing about this turbo is that you can easily adapt it for less then $800, test pipe and everything.

 

You are right but wrong at the same time to. If you reduce the back pressure at the back of the turbo you also reduce the back pressure at the internal wg and just about everyone knows that if you reduce the pressure at the IWG without changing how much it is closed then more exhaust will flow thru the WG since it is always going to take the path with the least resistance. This is why many people that have ran test pipes on stock or OTS tunes found that they lost power down low.


I am going to guess you are running a much larger K04 if it is making 260whp, but wow that wouldn't be the first seeing that others have done the same thing with the larger K04 Dahlback used to sell. Just search for posts by Mike in Canada that goes by the name Jet Jockey, he claimed to be making over 300hp with a K04 and hell that was years ago seeing he then switched to a 3076 and then to a GTX3076r.

 

I looked for a dyno but the only thing I found reguarding it was a dyno that made 255 whp and that was with race gas. I did see a dyno from diebold autosport but it was comparing two race fuels and stated 500+ crank hp on a K04 of unknown proportions at 25.3 psi. Here is that thread

Stop the presses... Comparo between the VP MS109 and the Elf Perfo 105...

The K04's I am referring too are huge in comparison to regular K04 turbos. The compressor on the MS3 setup is very close to proportions to the GT28RS and will actually outflow it. I am pretty confident that in some form of motorsport somewhere that there is compressor size standard and it is 46.5mm inducer and 60mm exducer since there is so many turbos that are very close to these proportions.

Small list off the top of my head:
GT2860R (the GT2860RS is a lil bit bigger at 47.2mm inducer if I am remembering right)
GT2560R
T28 from JDM Bluebird GTi-r
Upgrade nismo turbo for the RB26DETT
STI VF (whatever number you choose and came on the STi)
TD04H 19T
T3 60 trim
K04 MS3
TD05H small 16G

And I am positive I am forgetting several others.

Look at dyno's regarding these in applications similar to the A4 like the DSM 2.0 AWD that run the small 16G and the GTi-4 blue bird, and STi VF and they all have broken 300awhp. The 19T, GT28 and 2560R have made over 300whp in rwd setups with the GT's making over 350whp. The only black sheep is the T3 60 trim and its a dinosaur but I even know people that pushed them past the 300 wheel mark.

The other good thing about the K04 I have now is the turbine is much larger then any other K04 and its turbine housings is designed for significantly higher levels hp. This is pure specualtion that I will one day back up I am sure of but 260awhp on pump should be fairly easy with common bolt ons.


WHat turbo you running on your setup now? I am thinking about going to a TD05H 20G with Billet compressor later.

 

I have been running a GT35r for 10 years now, I need to go to a larger turbo because at this point I just keep breaking transmissions trying to push 600+tq thru it.

I sell many of the brand turbos including an exclusive Comp Turbo with a extended Tip compressor wheel in inducer sizes of 47mm, 51mm, 53mm, 55mm and 58mm.

 

The turbo looked to spool fairly quick wit the 2.0 setup which I have been planning on going with. The K04 setup is just for fun till I make my mind up. I actually have a few other turbos to choose from. One being the billet 20G and the other being 6031 and Garrett 57 trim. I was unaware that comp makes extended tip compressors which is a huge plus. Ultimately I want a setup that will make 400awhp atleast with the best spool possible. I think that makes the GT3071R a perfect fit.

I am also debating the 1.8 or 2.0. To my knowledge with the AEB you can swap in rods and make 400awhp. Considering the crank pistons, and machine work doing a 2.0 setup will run an additional $1,000 or very close.

Do you have a link on the comp extended tip setup? Also which 2.0 crank are you using? WHat pistons are you using? Thanks