Custom vs. RB exhaust
#1
Custom vs. RB exhaust
I plan on installing a new exhaust system on my TII because my old one has started to leak. The one i initially wanted to buy was the full RB exhaust system, but that would take me awhile to save up for. So, would it be as beneficial to install a 3 inch custom exhaust without the cats and mufflers (mufflers fell off)? Would i have to install a Fuel cut controller? Should there be a specific type of metal that the exhaust should me made of? To my knowledge the less backpressure a turbo encounters the faster and stronger it will spool which obviously means more power? So, by having a straight exhaust i will be able to reach the maximum potential of the turbo relying that the custom exhaust has smooth bends right? Let me know what u guys think............
#2
Senior Member
with some things you cant go cheap... ie: exhaust
i've seen some custom exhausts on rx7 and most shops do a shitty job of making them and all of them sound like garbage. i'd look at corksport, i have their catback exhaust, with racingbeat's dp+prescliencer and i like it
i've seen some custom exhausts on rx7 and most shops do a shitty job of making them and all of them sound like garbage. i'd look at corksport, i have their catback exhaust, with racingbeat's dp+prescliencer and i like it
#3
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Any full 3" exhaust (no cats) is going to up the boost....you will need an FCD, and to be safe AT LEAST a better fuel pump, and I'd probably recommend bigger secondaries to compensate for the extra boost. A boost gauge is also a must have so you can see exactly what boost level you're hitting.
#5
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Originally Posted by X-JaVeN-X
Any full 3" exhaust (no cats) is going to up the boost....you will need an FCD, and to be safe AT LEAST a better fuel pump, and I'd probably recommend bigger secondaries to compensate for the extra boost. A boost gauge is also a must have so you can see exactly what boost level you're hitting.
#7
Passing life by
I always choose dyno tuned proven products before custom up to the level they are applicable for.
Most every aftermarket exhaust tops out around optimal for 400whp or less. If your goal is more HP then 375whp it is my opinion to go custom and larger. Maybe 3 to 3.5 all the way back or even larger.
My project FC is 4in to duel 3in.
Most every aftermarket exhaust tops out around optimal for 400whp or less. If your goal is more HP then 375whp it is my opinion to go custom and larger. Maybe 3 to 3.5 all the way back or even larger.
My project FC is 4in to duel 3in.
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#8
Boost in..Apex seals out.
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Unles you have some type of bridge, or something bigger then like a GT35R, Racing Beat is for you. If you have either of the 2 listed above, yeah, I'd most likely want a 3.5-4" exhaust.
#12
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Originally Posted by RRTEC
Exhaust mods are scary on a Turbo without proper tuning.. A 3 inch downpipe can cause boost creep and kill your car... be very careful
#14
Originally Posted by iceblue
My project FC is 4in to duel 3in.
Ice we finished my complete 4 inch system. This thing is going to flow.
I used all 4 inch SS with 3 45 degree mandrel bends and a few 3 degree chop cuts and it came out great. I used 1 4inch oval magnaflow SS and 1 round magnaflow SS. If I had to do it over again I would have used 2 ovals.
Fits under the car with ease and have room for a 5 inch DP if you wanted it and I have a vert with less room due to the cross member. These giant exhaust systems will propell these new turbos out on the market to hp numbers normally only found with race gas.
#15
Passing life by
Originally Posted by Bukwild
Ice we finished my complete 4 inch system. This thing is going to flow.
I used all 4 inch SS with 3 45 degree mandrel bends and a few 3 degree chop cuts and it came out great. I used 1 4inch oval magnaflow SS and 1 round magnaflow SS. If I had to do it over again I would have used 2 ovals.
Fits under the car with ease and have room for a 5 inch DP if you wanted it and I have a vert with less room due to the cross member. These giant exhaust systems will propell these new turbos out on the market to hp numbers normally only found with race gas.
I used all 4 inch SS with 3 45 degree mandrel bends and a few 3 degree chop cuts and it came out great. I used 1 4inch oval magnaflow SS and 1 round magnaflow SS. If I had to do it over again I would have used 2 ovals.
Fits under the car with ease and have room for a 5 inch DP if you wanted it and I have a vert with less room due to the cross member. These giant exhaust systems will propell these new turbos out on the market to hp numbers normally only found with race gas.
I wish I could fit 5in tryd the RHD makes it tight.
Last edited by iceblue; 05-30-06 at 11:52 AM.
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