I have a stock block, but I haven't gotten around to installing these yet. I felt the need to take my SPG DPs to a local welder and have him make "some adjustments" to the DPs. I wasn't really pleased with the quality of the weld joints at the 2" opening on these DPs. The flange is a 2" opening, but with the way the pipe is welded into the flange, you end up with only a 1.8" opening. TURBULENCE!!!!!! on a small turbine outlet like the Greddy has, you don't want any other restrictions in the flow path........and having a LIP like that is not a good thing. So, I had my welder add some material so that I could grind out the inner lip left by the SPG welders. It sounds like I am being a PITA, but I felt it was necessary. I also had him cut off the "cat brace" flanges and weld up an extra O2 sensor bung on each pipe.

 

could you post some pix...

 

Does anyone know the measurements (from flange to 3inch openening?) of the AAM DP's? Or have a side by side (AAM/SGP) pic to compare the openings to 3inch?

 

I didn't take any beofre pics....but I can manage to go take some after pics. give me a couple days though.

 

well I know that the AAM DP will seat with the Greddy EvoTT 2.75" with a modifiaton to the Exhaust flange. Sharif welds a larger opening to help the two mate better and reduce the chance for leaks. I still need to get this done.

 

Here's my engine w/ AAM 3" DP's

 

SGP's quality is second to none. I love mine!

 

i sent a PM for price qoute and didnt get a PM back, so i called up there and was told about $1200.00 for the pipes/open dumps...!!! is that right.. thats twice as much as the AAM and more than what they have on the market place https://my350z.com/forum/showthread....&highlight=sgp ....

 

SGP is expensive. I bought their 3" DPs, but I have the SVRT open dump tubes. I was told by others that this combo works well and has no issues.
Also, I left a PM for SGP on their thread in the classifieds and it was never answered. You are better off calling them.

 

here are some pics of my SGP 3" DPs after I had them rewelded and ground to eliminate the poor transition at the turbine outlet. I also had an extra bung welded onto thr DP for a wideband O2. I am surprised that SGP and AAM don't do this normally...as everyone has uses them.

 

so when you plan on throwing them on? SGP is expensive.. I might do like u did and go with SVRT combo as well.. did you do the work yourself?

 

I need to put them on, but I can never seem to find the time. Work has been pretty busy. I need to find a day to do the work, and then be able to take the car to the exhaust shop to have them mated up to my exhaust.

Also, I didn't do any of the welding.....I don't have much welding experience.

 

i have my custom 3 inch downpipe made by injected Performance (thanks Marty=Primo8998)

Dump tubes recirculate to the end of the DP. Very nice piece!

 

Ummmm most wideband manufactuers recommend putting the wideband atleast 8" downstream of the turbine....

 

looks nice.. how much does it run.? Im torn between open/recirculating but good to know theres options...lol...

 

if you are referring to the bung close to the turbo flange that is where the stock front 02 sensor goes and basically replicates the Greddy down pipes and stock location of stock exhaust as well.

 

im starting to wonder if its worth it over the AAM DP's..

 

I don't really like the way AAM did their open dumps. I prefer the SVRT or SGP of doing it, which makes it easier for maintenance and bolt access. the AAM DPs look good though, but I was told that they NEVER fit right....

 

yeah i was just doing a search on them and found similar complaints about fitament..

 

I've bought several aam products all of them needed to be revised. All of them were not worth what I paid...I never learned my lesson...I ordered aam down pipes with their dumps 5 weeks ago, every week it is a new excuse, at first it was because their welders were behind, the second time it was cause their welders quit, the third time was because their new welders were learning jigs, the fourth time their welders were at HIN, needless to say after a month of holding my money they could not give me an exact date only an estimated date.

I called SGP an hour before they closed I received a fedex shipment notification 40 minutes later. Thomas @ SGp was great and the greatest customer service I received in a while. Two thumbs up they should be here tom and I won't have to reweld them or adjust them