I had a couple questions about the possability of using the RSR catback with the rest of the stage 1 components. I really like all the vishnu parts, and im torn between the vishnu catback and the RSR.. my question is, im not sure if the the stage 1 maps are created in such a way that makes the Vishnu cat run much more effectively. Im local, so i would want everything installed at the shop. The reason i want to run the RSR is because of a killer price i can get it for, and the extremely tight fitment and good sound ( not that the visnhnu doesnt excell in these categories either) Just trying to find some unbiased, and honest info on the comparison between the two on a stage 1.

 

I doesn't matter. I have Stage 1 and the only VISHNU part is the xede.

My dyno with HKS hipower,UR highflowcat and Helix DP plus fidanza cam gears

http://www.dyno4mance.com/tuning/you...ages/snoop.php

 

sweet... exactly what i wanted to know.. but now lets talk about fiting the RSR to the vishnu dp and modular cat... do they bolt up? or would i have to go with a whole different setup.. Im thinking maybe the helix o2 housing, 3 inche downpipe, cat with the RSR catback.

 

I believe the Vishnu sig series pipes can interchange w/ any of its stock counterparts. Then again, I might be wrong. I think that the cat back will fit, but I would wait for one of the Vishnu guys answer that question before you go and start spending money...

 

Im also looking to see if adding the o2 housing is going to have any problems if i dont have a custom tune right away.

 

You are correct. Sig series only

 

So i went ahead an ordered everything yesterday... I have the RsR GTII, and helix 02 housing, DP, High flow cat being installed next week and im all ready running a gfb bov.

I would like to come in at a strong stage 1 plus next month..........I threw around some ideas, and believe i want to add the Vishnu cam gears, walboro pump, Helix IC piping kit (if its available by then), and the works ported throttle body, denso spark plugs and hot wires, and have this all custom tuned either on xflash or xede ( if im just going to need another custom tune later, is the xede worth it to me?). any idea of what kind of power this will produce on 91? Will i be throwing a cel? and is the car going to pass a smog test, because its currently registered in south carolina and residing in norcal.

I would be finished with the engine bay for awhile after this..... i do not want to add an aftermarket turbo, but would do a stock replacement in time..i have thought about going with a tubular manifold, but had some feeback that the throttle body might give me better results?? I also want the Vishnu intercooler when its released. And i havent really heard of all the advantages of going with a 10.5 turbo housing yet. any input? The car has around 40K miles....... so my next set of mods would be including a new top end.

 

Are there any diameter changes in the exhaust system which you purchased or is it 3" from end to end? Often, JDM exhauts are tapered at the flanges (3" to 2.7").

shiv

 

I dont believe soo.. the RSR is pretty darn straight ( one curve) and appears to be 3 inches throughout.. and the helix fit like stock, also i heard there was an issue with running the 3" dp as is.. and that the 2.75 was better, but with the 02 housing ( which opens up into 3"), im hoping those problems will go away.

BTW.......shiv, Sport compact car is throwing a little track day at leguna seca in mid october, im trying to get an evo event set up, possability the little red machine could find its way down here?

 

I just did some research, and the RsR does taper down to match up to a stock downpip... RsR claims that this can be modified to 3"

 

You can run a 3" full mandrel from the turbo back with no clearance issues and very few bends. Ours will be in production in the next few weeks with no tapers anywhere and a basically straight out design. Exhaust is exhaust is exhaust. Higher quality doesn't usualy equate to more power, it just equates to better materials, welds, and support for the product. It also can sometimes translate into fitment quality.

 

I'm going to be in India from the 4th to the 17th so october is going to be a tight month, time-wise. Effectively, I only have the next two weeks to get everything done since i'm leaving direction from Atlanta after my dyno weekend at Dyno4mance. That's not enough time to do much besides finish Xmap v3

shiv

 

Hi Mayhem who are you with? Vendetta? From my neck of the woods is all

 

there is only one portion in my setup that as is will have any kind of taper to it.. and thats coming off the high flow cat to the the cat back, but it was designed so it could be modified... i guess i will dremel it to 80mm, this was the absolutely straightest cat back available (also had the best fit of the any of the exhausts i have seen at the norcalevo meets), and i picked it up cheaper then just about any other unit. If it turns out to be to obnoxious, i may have to switch over to the vishnu cat back

 

Nope. New company (called Knife) basically came to be after some exhaust was made for my evo. We haven't even really gone public yet and are pretty damn busy. Actually doing alot of subbie stuff. We have an AWESOME fabricator who will be making some really neat stuff for both the evo and every turbo subby they make in addition to turbo honda, srt-4, and a few others.