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modification of greddy manifold and downpipe

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Old 06-20-2012, 06:34 PM
  #76  
wcs
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Originally Posted by Brettus
I think this is the best setup - yes . It does work either way and i doubt most people would even notice the lean condition at part throttle. Even with it set up pre turbo you need to adjust exit throttle maps to get it out of CL early enough to prevent a lean condition.
OMG a ******* light just went off!

****!
****!
AAAAAAAAAggggg

this suddenly makes way too much sense to me .... stupid lcd stupid stupid stupid
Old 06-20-2012, 06:37 PM
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holy **** ... self facepalm

this changes sooo much for me.... how did I miss this?!?!!?!?

HOW?!?!?!

edit --- wait no ... now I can't remember. Ok booze maybe a factor here. Can't wait to get home to see if I'm setup post or pre turbo

Last edited by wcs; 06-20-2012 at 06:39 PM.
Old 06-21-2012, 09:29 PM
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Ok guys i'm ab 70% done i'm just waiting for a few more parts to arrive in the mail all i have left to do is run the intercooler piping on the turbo side and figure out the drain,tap oil pan, adj the waistgate and run water lines.. I have an extra air box and i cut the maf section out of it so i could have the same diameter piping for the maf
do i need to have a certain length of straight piping before and after the maf if so what does it need to be?? Also i plan to use the factory screen in front of the maf as well as use an air filter simaler to the greedy mushroom one?
Old 06-21-2012, 09:39 PM
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/\ the best setups have the filter then some straight tube (no bends) before the maf . The filter acts like a flow stabiliser in itself if set up that way . This is why i get away without any screens in mine whatsoever .

if you must have bends pre maf - get as much straight tubing as possible after the bend and use a screen or a honeycomb to straighten the flow . The amount of straight needed after the maf is way less - maybe 1 full diameter .
Old 06-21-2012, 09:43 PM
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Originally Posted by wcs
Ok booze maybe a factor here.
Old 06-21-2012, 10:02 PM
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Originally Posted by Brettus
/\ the best setups have the filter then some straight tube (no bends) before the maf . The filter acts like a flow stabiliser in itself if set up that way . This is why i get away without any screens in mine whatsoever .

if you must have bends pre maf - get as much straight tubing as possible after the bend and use a screen or a honeycomb to straighten the flow . The amount of straight needed after the maf is way less - maybe 1 full diameter .
I actually have had my battery relocated in the trunk for quite sometime now so I have a lot of room honestly.
I have ab 10in from the beginning of the air filter to the maf and I have 6in after before I go back down to the 2-1/2 piping with the bend by the omp will this work? Also Will having the screen and the air filter create any issues when it comes time to tune? should I take the screen out
Old 06-21-2012, 10:18 PM
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Originally Posted by blakerx87
I actually have had my battery relocated in the trunk for quite sometime now so I have a lot of room honestly.
I have ab 10in from the beginning of the air filter to the maf and I have 6in after before I go back down to the 2-1/2 piping with the bend by the omp will this work? Also Will having the screen and the air filter create any issues when it comes time to tune? should I take the screen out

Sounds ok - although using the stock plastic tube is possibly not the best idea . I know of someone that did that only to find that it cracked up in short order .
Old 06-21-2012, 11:19 PM
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definitely excited to see the finished product
Old 06-22-2012, 09:57 PM
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Originally Posted by Brettus
I recently found a drawback to plumbing the jet air and omp post turbo - air bypasses the throttle at part throttle . This can lead to a lean condition (14.7 at over 100% load) as the ecu wont exit CL . Almost impossible to tune this out with CL exit throttle maps.
I thought I would share this link with you guys this is where I have been getting most of my silicone elbows and strights from. The quility is really good and I found something interesting that I may try seening how the lines wont see boost for the $14.00 I may give it a try and buy 2
http://www.siliconeintakes.com/produ...99f9733c983b2c
Old 06-26-2012, 12:01 AM
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Originally Posted by stinksause
definitely excited to see the finished product
Originally Posted by stinksause
definitely excited to see the finished product
This is defiantly not a easy Mod to do. Their were a few times I was wishing mm still offered the upgrade turbo b/c it a bitch to modify everything and If he did this personally for every kit I could see why it took so long to make.
On top of everything yesterday when I was trying to test fit everything for the final time "well hopefully" I dropped the manifold on my head and I almost said f-it . I just hope I am happy with the results when I am Finished.
So far the hardest processes are modifying the turbo its self and by that I mean
the waist-gate has to be cut rearranged and the arm extended and you pretty much have to make your own oil drain tube. I did get the turbo coated for heat as well as the manifold and d/p and had it wrapped and then re-coated again. So I think I will be ok for heat although tomorrow I am going to look at getting some thin ss sheet metal for the sub frame and transmission to protect it from heat but depending on cost I may as well look into that since I have gone this far so I will let you guys know on that. With the few minor set backs I have had I am planning to have the car finished next week and the tuning begins but all and all I think you guys would be better off just selling the greddy kit and buying a better system their is to much work that goes into this than I think it is worth although If you have the time/skill and like to be challenged than Go for it.
Old 06-28-2012, 09:56 PM
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Update guys I have the kit fully installed as far as the turbo goes just waiting to weld sum Nipples on the Intake pipe for the vac sources and recirc the bov,Run boost lines and I'm ready to go!! I wanted to post the random pix I have for your viewing pleasures!
The tras to downpipe support is longer that the factory one witch I did not know until I tried to install so I made a temp support out of an angle steel I had laying around Its not the prettiest but it worked like a charm and took me a whole 5min to make lol
I used the copper rvt to use on the metal gaskets for the manifold/downpipe and used a little to much but that gives you a good shot so you can see how close everything is its a big a_s_s turbo and it barley fits the

Lastly The Intercooler It was a time consuming project But I found a way to Modify the reinforcement to fit this big Intercooler. The reinforcement is honestly not connected all the well so I cut the front and fit the Intercooler and I am currently sanding everything back down to weld up and repaint so it will not rust. The position is damn near perfect The Intercooler is high enough so the air hits the radiator and will not cause heat issues but yet its low enough on top so the bumper/hood fits like stock. The fog lights are a tight fit but it works flawlessly!!
I will post more pix once I get back from vacation next week and everything is put back together and ready to drive.
Attached Thumbnails modification of greddy manifold and downpipe-012.jpg   modification of greddy manifold and downpipe-011.jpg   modification of greddy manifold and downpipe-010.jpg   modification of greddy manifold and downpipe-009.jpg  

Last edited by blakerx87; 06-28-2012 at 10:17 PM.
Old 06-28-2012, 10:10 PM
  #87  
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[quote=
2. Is the downpipe I have a pretty big gap from the d/p to the cat I could problem pull it in but I'm not so sure of the long time effects of this like possibly cracking the downpipe? I was thing ab just Modifying the exhaust like possible cutting the exhaust adding a little more piping in the straight part after the cat.
What you guys think.

To answer my own question after reflanging the manifold the downpipe sits a/b 1/2in higher but the downpipe did fit I had to loosein the 1st bracket right behind the cat to get a little more slack and voilà.. worked like a charm.
Attached Thumbnails modification of greddy manifold and downpipe-011.jpg  

Last edited by blakerx87; 06-28-2012 at 10:15 PM.
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