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      07-27-2012, 02:16 PM   #23
andrey_gta
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Sadly cams are expensive according to the few sources.
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      07-27-2012, 02:39 PM   #24
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Quote:
Originally Posted by TheSt|G View Post
I would focus on the primary cats instead. Secondaries are only a 200-400 cell, much like a race cat, and won't yield as much.
I wouldnt rule them out so fast. I piped mine out on the 135 and the drivers side secondary cat was partially clogged. the better the flow...
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      07-27-2012, 05:52 PM   #25
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Quote:
Originally Posted by Evice
Quote:
Originally Posted by flinchy View Post
huh? he put down 210 on a h0t day with no other real mods, that's +10 or more with presumably stock secondary cats, and stock header with primary cats. that's a SOLID gain

and he never got a baseline dyno, for al we know it could be +15whp on his car
ED: and a stock 135i mufler isn't 3" ID, so it's effectively maybe a 2.5" exhaust, going 3" piping is a waste when it's restricted anyway

so since the standard replacement for the n52 seems to actually be 2.75-3" all the way through, this isn't even a full large diameter exhaust

expect actually few more hp with a proper sized muffler (haha, i'm usually theone saying that mufflers don't do anything! :P)

replace the muffler, new headers with larger/no secondaries, i can't see why another 15-20 wouldn't be seen.
Blah blah blah.....No it is not. +5-6HP compared to my bone stock which is may be 1% different than his as baseline, which was on a HOT day as well with 5 pulls... Breathing better, less exhaust restriction isn't helping much, that's what I am saying. It needs to be a complete solution.
Most other dynos seem to show more like 10whp with the same mods.. I mean, the graph says 210ish when stock most pull 198-200??

But that's exacty what i said - do the full thing properly and you'll see real gains

Ed: the only aftermarket cams i found were 4k in a full kit with exhaust and tune - i sent them an email asking about the price of cams alone - no response.. If you could get a set of oem cams to a machine shop it probably wouldn't be too bad to get them to recreate them in a larger profile (not too much, just enough to raise the rev range a bit without making low range super lumpy)
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      07-28-2012, 09:46 AM   #26
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Quote:
Originally Posted by andrey_gta View Post
Sadly cams are expensive according to the few sources.
And they push the power into a RPM range that isn't that useful or desirable for a long term DD.

Quote:
Originally Posted by 1911A145 View Post
I wouldnt rule them out so fast. I piped mine out on the 135 and the drivers side secondary cat was partially clogged. the better the flow...
I'm not saying it won't do anything, just talking about where they stand compared to the primaries. Also, a broken cat is a broken cat.
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      01-08-2013, 12:09 PM   #27
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Jan 2013 update
DISA dyno'd

About 250-255 HP!

See post 1 here
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 01-08-2013 at 12:53 PM.
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      01-08-2013, 03:32 PM   #28
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Removing secondary cats throw any codes for you?
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      01-08-2013, 03:41 PM   #29
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Originally Posted by jameshtruong View Post
Removing secondary cats throw any codes for you?
no codes.

Codes come when you remove primary cat.
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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      01-08-2013, 03:45 PM   #30
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Quote:
Originally Posted by andrey_gta View Post
no codes.

Codes come when you remove primary cat.


Sweet! Thanks for the info, once my diffuser comes in , I'll be trying the exhaust out with it strait through no muffler, if it's too loud I'll just add a muffle and see how it comes out
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      01-08-2013, 04:10 PM   #31
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Quote:
Originally Posted by andrey_gta
Jan 2013 update
DISA dyno'd

About 250-255 HP!

See post 1 here
Is that with the evolve tune?
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      01-08-2013, 04:45 PM   #32
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Quote:
Originally Posted by Southjersey128 View Post
Is that with the evolve tune?
No Tune yet, just DISA manifold
All is in the mail
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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      01-08-2013, 06:16 PM   #33
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Quote:
Originally Posted by andrey_gta
Quote:
Originally Posted by Southjersey128 View Post
Is that with the evolve tune?
No Tune yet, just DISA manifold
All is in the mail
I'm probably as excited for the dyno after the tune as you are. If it gains what they say I'll have to see if it'll do anything for my n51.
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      01-08-2013, 06:25 PM   #34
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there are 2 times where the dyno graph drops down, is that due to the DISA(around 3.25 and 4.25 rpm)? The first one you have posted seems more linear and smooth, hopefully evolve will fix that on yours ! Looks great!
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      01-08-2013, 06:39 PM   #35
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Quote:
Originally Posted by Greenkirby21 View Post
there are 2 times where the dyno graph drops down, is that due to the DISA(around 3.25 and 4.25 rpm)? The first one you have posted seems more linear and smooth, hopefully evolve will fix that on yours ! Looks great!
image 1 is just exhaust, i assume about a 5-8hp increase over stock with resonator & secondary cat

image 2 is with DISA & no tune. An un-tuned DISA manifold has those 2 dips.
the AA tune is known to smooth things out nice and make it more linear.

Evolve, based on dyno pictures that I saw, seems to do all that AA does, plus it adds more in the top end. I guess I will know soon enough how it works on the 128i, quite excited to see the Net gains.

My only real concern is 93 octane vs 91. Here we have mainly 91 octane: Shell vpower (91 no ethanol = apparently close to 92 octane) & PetroCanada (91 + additives = "94" octane)
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 01-08-2013 at 06:46 PM.
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      01-09-2013, 12:26 AM   #36
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Thanks for the dyno Andrey - great info. The sharp drop in hp from 6500 rpm with the 3-stage vs non DISA (no tune) reflects what I have felt with mine, which feels almost as if the rev limiter has cut in early. (I only have ~ 150km on the manifold.)
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      01-09-2013, 08:22 AM   #37
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Are those the points where the DISA flaps open?

My e46 had a 2-stage intake and It always felt like the engine 'hiccuped' briefly when it switched over. My dealer went through the whole PUMA case thing of shipping it to BMWNA for an update, and that improved it but it never went away completely.
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      01-09-2013, 01:18 PM   #38
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Quote:
Originally Posted by wolfe View Post
Are those the points where the DISA flaps open?
Yes those are Disa opening. It doesn't feel like a hiccup, I do notice a surge of power.

Hope that the tune will make it more linear.
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is
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      01-09-2013, 01:34 PM   #39
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I'm wondering if the tune will bring more peak power at redline instead of the slight drop off it has now... god know i love n52's at 7k rpm
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      01-09-2013, 02:17 PM   #40
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Thanks for sharing your info. I'm interested what kinda of numbers you'll get with the tune. Been reading your post lately and was interested before in doing the DISA conversion but sold my manifold. Its a new year so maybe I might change my mind. When i do I might have to hit you up for some advice if i go diy. I always thought you had a the AA tune. Can't wait for the next update.
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      01-09-2013, 08:18 PM   #41
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Any advice on finding a DISA 3 stage intake? I've been searching high and low on ebay as well as a few salvage yards, and I've turned up nada.
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      01-09-2013, 11:51 PM   #42
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Originally Posted by cu260r6 View Post
Any advice on finding a DISA 3 stage intake? I've been searching high and low on ebay as well as a few salvage yards, and I've turned up nada.
car-part.com is what I used, took about 2-3 months of checking it once every few weeks. Found a manifold from 2009 X3. Always asked for photos. Expand your search to include x3 x5 z4 3.0is as well as 330i and 530i. I didnt trust all the n51 posts, but u never know if the photos show the Boxes boxes attached.

Quote:
Originally Posted by Killswitch View Post
Thanks for sharing your info... When i do I might have to hit you up for some advice if i go diy. I always thought you had a the AA tune. Can't wait for the next update.
No problem. The most annoying DIY bit was the stuff connected to the bottom of the original manifold & dis-connecting hoses.

Quote:
Originally Posted by 631twentyeighteye View Post
I'm wondering if the tune will bring more peak power at redline instead of the slight drop off it has now... god know i love n52's at 7k rpm
Yes, look at AA dynos they move that drop to 7k. Also alot of the disa drops in the AA tune are moved fwd by 500 rpm & smoothed out
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 01-10-2013 at 07:24 PM.
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      01-10-2013, 10:59 PM   #43
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so the euro tune basically brings our cars to 130i specs? or as close as possible?
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      01-10-2013, 11:16 PM   #44
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Originally Posted by 631twentyeighteye View Post
so the euro tune basically brings our cars to 130i specs? or as close as possible?
no idea yet.

Evolve and other european tuners make their 125i's match tuned 130i @ about 275-280hp. Keep in mind they have better Gas quality too.

Eurocharged mentioned to me that their tune for 328i with DISA, hits a wall at about 255 hp.

Will find out soon what Evolve means in my 128i

///
Aside:It appears im near e36 m3 power levels when looking at these e36 dyno's
http://forums.bimmerforums.com/forum...0#post10252330
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128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e36M lip Wishlist: //M front arm, coils, n55 eng mnt, headers, LSD, e60 finn diff


"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is

Last edited by andrey_gta; 01-10-2013 at 11:30 PM.
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