AlShaqsi

Hi guys
I was wondering from where i can buy PPE Headers from dealer who can ship it to Oman??

& have anyone installed MagnaFlow 49 State Converter 49285 ,49284 Direct Fit Catalytic Converter headers? I am planning to buy it & install it
Is it beater than PPE?

heyarms

iTrader: (5)

Never seen anyone with Magnaflow headers for the 2IS?

Will PPE not ship direct to you? If you PM them on the forum or email them (should have email on their website) you could ask if they can ship to you, if you havent.

DaXxJaPxX

Yea this is a real head scratcher, how have we never heard of magnaflow headers with built in cats? For both the 250 and 350

PPEHeaders

iTrader: (4)

We can ship directly to you. You can email me at sales@ppeengineering.com and I will get you a shipping price.

Those aren't really headers. The tubes are too short and there will still be a good amount of reversion between cylinders. Also the lengths are incorrect for any wavelength tuning. The cat also chokes down some power. I doubt there would be much gain over stock. It would be a good replacement for a bad stock catalytic converter, but not really a performance part.

Also, they are sold per side. They are over $1100 for the pair.

Lexusmobil

On your website ppeengenering.com, what is the difference paralell merge collector option vs formed collector with spike?

Gville350

iTrader: (10)

Those Magnaflow headers are like an OE-replacement header w/ intergrated cat; nothing really to do with performance, just a replacement from factory with their own take on the design/clearances.

PPEHeaders

iTrader: (4)

Here is a good webpage that explains the difference between the two types of collectors:

http://www.coneeng.com/results.html

Lexusmobil

ok If I understands well , the parallel merge give more hp,torque in mid range rpm and the spike merge give more high rpm.

PPEHeaders

iTrader: (4)

Basically the parallel merge collector is the ideal collector and is used on most all race cars. The formed collector with spike is made to simulate the merge collector and is pretty close in performance while being less expensive.

2013FSport

iTrader: (2)

I'm still looking for answers from PPE....
1) A dyno graph from ~2k on up on 350 sized primaries.
2) Is there an actual 250 sized primary and what are the actual ID or OD of the 350 vs 250??

3) My point is that DD isn't at 6k all that long and if a 250 sized primary on a 3.5liter engine provides improved mid-range, it may be the better choice and still potentailly have the same peak HP...

In wonderland I'd like to see an IS-350 fitted with 250 headers (assuming they build them) and compare the bottom up curve.... Hell, I'll pay for the dyno runs, you supply the headers!

Gville350

iTrader: (10)

I had that same question in my head when I was header shopping; but after some research of my own, I went with the 350-designed specific headers. I'd hate to have any sort of choke points in my exhaust. But we also need to be mindful to not remove any savaging effects from "up-sizing" the piping too large. I'm sure their current piping diameters are on-point.