Chris, you know I "don't have it out for you"... I have the utmost respect for you, Adam, and former Kasey. I love what you guys do and the support you offer to the evo community including myself. I have purchased a lot from you guys and support your cause greatly and will continue in the future!

You are right, I however do have my opionions! I have not and do not run your two style dumps. I know were I stand because of other people that have called me due to some of the problems they were having with their MAP dumps and others alike, not singling out MAP. They call me because of my experiance with dumps and the great results that i have had with mine.

A personal experiance I have is a close friend of mine here on evom called me and I tried to help him with his problems. This is what I did for him and he can chime in if he would like, I would like for him too... I double checked that everything was installed correctly, the wg wasn't preloaded to much, and that the boost controller was setup properly. He was on pump gas and tuned for a 25psi spike on 93 pump with a mbc. On the dyno they were spiking like normal, holding 25psi till about 5k then started to boost creep all the way to 30psi by 7.8k. They were mind boggled by what it was and I told them to take the mbc out of the loop. Did another run on the dyno and spiked 17psi and boost creeped to 23psi by 7.8k... That is without a doubt boost creeeep. Their may have been a problem with just their dump and not all of the MAP dumps... That I don't know. I have spoken with quite a few people that have had problems with MAP, QTP, and honeslty all the other companies that make dumps!!! This is the sole reason why David B hates dumps and will tell everyone to stay AWAY! The only company that I have heard absolutly nothing negative about is Shearer! They are expensive for a reason... Shearer replicated my dump (R/TErinie) to a tee. The only diff is the 3" they use has a tighter radial bend so it can be used with the A/C. Mine is not compatible with the A/C due to me refusing to use a radial bend tighter than a 45*.

I was not personally there and I didn't analyis the dump in hand. However through trial and error we knew the dump was the problem. Put the megan back on and the car acted normal. The dump was one of the first you made and the 2.5".

You sent me pics in the past that showed that the flapper opened fully helping to eliminate boost creep. Their are still things that create boost creep, like: The trasition between the flapper and the dump tube, the amount of turbulance post flapper, the size of the dump tube, and the amount of preload that people tend to run.

You are correct that I do push for a 3" turbo outlet... I don't need a dyno to show you that a 3" will help scavange the exhaust gases from the turbo. No buddy would put a 2.5" exhaust on their car so why would you put a 2.5" housing on your turbo? Anything that reduces the packpressure post exducer will allow the turbine wheel to spin more freely, flow at a higher rate, and will improve spool. Just like dumping the wastegate can reduce upto 2-3psi of backpressure out of your 02 housing. Robert has tested this time after time.

I can talk all day about the opionion I have on dumps. My car is a prime example that a proper dump works and works great! Other cars with the same mods as me minus the dump make 30-40hp less then me, not saying a dump is worth that much... There are also a number of FP Black cars that can't even make the power that I make on my FP Red and the two cars I'm talking about are both 32-33psi. I have nothing special on my car; plus I have small *** HKS Cams, an unported FP Red, 29.5-30psi, and only 15* of timing. I could easily be 550 with 1psi and 1* of timing. However their is a reason that I am making 535hp on that boost level, 15* of timing, and my car doesn't drop off in power... I am 100% possitive that the reason for all I have mentioned is my 3" housing with 2.25" dump.

I am 100% dump FTW and that is the fence I stand on and I would like for everyone to join me because you guys are really missing out on getting all the power out of your Reds and Blacks. Our small turbine housings need the extra help.

Yes their are people that have your dumps that don't have problems. Chris makes all the efforts to produce good products to the community. I hope that no one is assuming that I am bashing Chris, his products, or MAP as a whole.

I think I can speak for the majority of us and we would like a before and after with a dump vs. a ported Megan. I honestly have not had the ability to do this myself and it is somehting I would like to do in the near future...

Mikey

 

Sorry for going off topic... Well ER is building my motor right now. Should be done and ready for the dyno late April. I'll let you know. I'm sure there will be a few people going to the dyno to see it. I plan to max the Red out. Not worried about the lifespan since it is getting a different turbo shortly. We will see what the Red is honestly capable of. I was chatting with MostWanted and he thinks I'll make more power than him. He said I have more mods then him and I'll have a 2.4l... I found out that his turbo was not even ported. That was a shock for me!. He put down 631 on 38psi. We will see what I put down... RED FTW

Mikey

 

Map needs to prove their dump will make more power then a ported megan!

 

my epm dump works...quite a few copy cats and attempts to make it better with more bling and no increased results.
Shearer jumped on the dump train seeing how popular they became thanks to EPM.

There is a noticeable smell on all the dumps, however, it's not bad.

 

I installed a JMFab dump on my old Evo and I absolutly LOVED it. When I bought my new Evo, it had already had an EPM dump installed and the AMS TBE is touching the oil pan slightly. I KNOW it's not improper fitment on the TBE's behalf. Also, the EPM's wastegate dump isn't bellmouthed. It's just a harsh opening. It will gain power, but there are much better options.

The Shearer or JMFab is the way to go. My experience with JMFab dump was great. Fitment was almost perfect. All I had to do was VERY slightly bend the A/C line and well as shave a little off the DP flange. Other than that it made no contact with the rad or LICP and the TBE fit perfect without touching the oil pan. One version fits ALL LICP's unlike the EPM's.

 

Jesus Mikey looks like you have been reading some fluid dynamics books, almost sounds like you know what you are talking about I like the theory of dumps and actually was the catalyst for what was to become Mikeys dump, I was the test bed for the first R/TErnie dump. I hated the sound, and it was a creeper due to design. More so I hated the sound...

 

So why does just Map need to?? Why not EPM, JMF, Shearer, QTP also?? I had an EPM dump when they first came out...I was probably one of the first people to run it but their fitment wasn't very good & didn't work with my BR LICP...So I went with the MAP 02, fitment was a ton better & install was easier also...

 

I have the EPM Dump. The Exhaust housing is 40% larger then the Stock unit. The Dump allows for better boost control and since you are diverting exhuast gas you exhaust pipe is now more efficent and there is no turbulance from an internal dump. I love the sound, it is an overall win.

 

Screamer pipes suck. I hate the sound. Also, not good with the 5-0.

=(

 

I want to see what it will do because i was considering getting it

 

a dump on a fpred X does not net much gain over a standard setup. Ill soon have proff as in getting rid of my dumped setup and im sure to loose no power.

 

There's nothing new about these O2 dumps. They've been in the DSM community for years. Just like with the EVO ... attention starved ricers ran out and purchased them later realizing that they attract mostly negative attention and return next to no gains over a proper O2 housing.

 

Ahh too much back and forthness lol, now Im definitely 99% set on doing a swap between a dump and between a ported megan because the only thing thats gonna settle this, for me at least, is seeing what happens on the dyno between the 2 housings.

 

i do it for the sound myself

 

you gonna use a mbc to do the test?