+1 , one of Ed's cars he tuned has the evo2 w/ gt30r, sounds like a jet - SO quiet.

Unfortunately both the Hush and evo2 are restrictions at high HP levels... but then you go atmo EWG and your car sounds super stealthy before you hit full boost and go lawnmower mode best stealth-killer setup out there

 

it's good you only have a 10% chance. mine's like 100% though.

on the freeway, i can't pass people up. i can't downshift from 5th to 4th for more than a second because i'll feel the cut coming. passing in 5th is a no-no as well since it freaking jumps so quickly.

 

thanks bro but i need quiet and non melon shooter.

melon shooter + driving style = not good.

 

off tangent, do different dps sound differently? are catted ones much quieter than catless?

lot of folks that vote for either one regarding the catted/catless.

 

damn 100% would suckkk lol.. at least i can pass people :>

 

yes. Catless is always going to be louder. there are few ways to reduce the noise coming from your tail pipe.

1) Get something like a Stromung, prodrive, borla hush for a cat back.
2) And resonators.
3) Add catalytic converters.


I ran catless for about 7 months with a stromung 3" downpipe, 2.5" stromung race pipe, and 2.5" catback. yes, it was loud. Not as loud as a N1 style exhaust, or perrin, but still quite loud.
I recently put the stock 3rd cat back in. no noticeable difference in power.

IMHO, running a stock TD04 turbo(all 02-07 WRX) does not gain anything performance wise from a 3" exhaust. i've ridden in many cars with 3", done 3rd gear pulls along side them, no difference.


Find yourself a short downpipe, keep your stock 3rd cat, and get a single or double tip cat back that isn't too shiny.

my $0.02.

 

thanks dude but i do have the hush and it ain't so hush.

 

So wait, you don't have a Cobb map on right now?

Here is what I would do:
- start saving money
- buy an AP first
- get a catted DP, since you will see little gain with catless on your planned setup. Honestly, you will probably have more negatives.
The back pressure from a cat has been known to helpwith boost creep on smaller turbos to.
- Catback exhaust is up to you, but if you are worried about cops, then put the stock catback on. Again, little or no restriction at your planed power level.
- get a Halman Pro RX or Evo RX MBC or a 3 port GM solenoid, and a protune
- gauges are nice too. If you completely trust your setup, mechanics and tuners fine, but I prefer to monitor the state of my modded engine. Cheper than replacing it if something goes wrong. I cannot see how people run big turbo setups without gauges...unless you are constantly data logging, that is nuts. /rant
- oh, and learn to do the work yourself and save $$$ for mods!! Swapping a DP or catback is the easiest of easy...maybe a local can supervise for you over the weekend.

 

No they are not much quieter.

 

Here's the rationale:
- when's the last time a fuel pressure gauge saved someone?
- when's the last time an oil pressure gauge saved someone?
Chances are they fail at high rpm and one is screwed before one can do anything
- When's the last time a boost gauge saved someone?
Well, yes if your tuner didn't put a fuel cut.
- When's the last time EGT saved someone?
yeah, EGT is a good gauge to have
- When's the last time oil temp saved someone?
yeah oil temp is a good gauge to have too. Remember the BMW 335i's overheating? But this is going to be if you are at a track day or something, not regular driving
- When's the last time a wideband saved someone?
Well this is really debatable. On one hand being lean is bad, and if your open/closed loop transition isn't tuned good I think your map can start trimming out fuel over time. However if it goes progressively leaner then your ECU will pull timing (and boost if you don't have an MBC) and save you. On the other hand if it's catastrophic lean-ness (alcohol injection pump failure?) I dunno, can a wideband save you in time before the ECU detects knock? I'm pretty sure the answer is no, a wideband will not save you because you will not catch knock before your ecu's knock sensor does.



Bottom line - think of a real world scenario when these gauges can ACTUALLY SAVE YOUR ENGINE. Do you look at your gauges all the time? I have boost, A/F, EGT and oil temp. When I go through 2nd gear I can't even watch my speedometer. I can't even watch my tach really, since i'm focused on the road and not going sideways on accident because 2nd gear spins my tires. So how do the other gauges do ANYTHING? If I was at a track and continuously going WOT I could see my EGT and oil temp, coolant temp gauges saving me from overheating over time, but I could NOT see my gauges saving me from a catastrophic failure - there's just not enough time to react.


So to answer your questions, I dunno maybe that's why people run big turbo setups w/o gauges

 

Would you bake something without seeing the temperature on the oven? I don’t think so; so why do something with you car without seeing what it is doing also?

I'm going to get gauges.. + they look cool :-P

 

I will limit myself to 1 kinda off-topic post, so I do not entirely derail his topic

Regarding the above ^^^, I am of the opinion that most major failure have symptoms. Some are detectable by human senses or gauges, some are not. Gauges will tell you some of the things you cannot detect normally, and help identify an issue I can fix the problem before it causes a major failure. Is this always the case? Of course not. But gauges are cheaper than blowing up most stuff.

Real world scenario where gauges can save my engine? OK, temp is running unusually high, so I stop the car instead of damaging it. Oil pressure is running low, same scenario. Boost creep, check. EGTs high, copy. AFRs running lean, this is a no-brainer. Many of these have a simple answer: stay out of the gas until you get it fixed!! But without this info, you may continue on and damage something. This does not mean all repairs will be avoided, but you will save time and money if you avoid a major failure.

There are a lot of SMALL things that can cause bigger long term issues, and gauges can let you know while there is still time to fix the problem. A great example is a pre-turbo exhaust leak, or a post turbo boost leak.

It is true that many of these are limited to situations where you will be pushing your car harder for longer periods...mostly racing. Oil temp is a perfect example. Oil temp can indicate that you are reaching (or have passed) the thermal limitations of your oil, and that it will begin to sheer soon thus damaging your engine. It is not likely you will reach this point on a daily driver not intended for trace use.

However, to say that ALL failures will be instant, with NO warning, is a stretch. In the case of a daily driver with a few mods, it is very reasonable to believe that you will see symptoms of an issue.

To answer your question, YES I watch my gauges while I am driving. NO, not all the time, but I do watch them. It is mostly a rotation, but I tend to peek at my EGTs and Boost more when I am hard on it. I do not watch the tach much, as I know my car well enough to not need it. To me, it is necessary to know what is going on...besides my slight OCD nature, I figure that anything to help keep my modded engine running is worth it. THAT is the key: the more mods, the more to go wrong, and the more need to keep an eye on things.