I would like to know from you guys that have downpipe, midpipe and exhaust. I have racing beat downpipe, midpipe and high flow exhaust and it's very load, what about you gusy
?

 

Mine's quiet cause of the HKS catback.

 

I have a 3" racing beat downpipe, custom 3" cat, and a Greddy power extreme. My car is pretty quiet just humming around town or on the highway, but stand on it at higher rpms, and everyone knows im coming. Its great because the sound isnt all honda ricey, sounds really deep and smooth. Its an 89 Turbo by the way....

Graham

 

mine sounds loud too after 3k rpm, before that is kind of loud but not like after 3k.

How safe is my engine With this exhaust setup that i have?

Downpipe, Midpipe and catback, everything is high flow no cats, it's all open.

 

I have a RB header and MP, no cats, some cheesy catback,. It is pretty loud. But it doesnt help that I intentionaly drive through parking lots revving the engine and spitting flames to set off car alarms

 

It is actually better for the car overall. Backpressure is bad no matter what, it may add some low end torque, but it is not good for ANY engine, pistons or rotary

 

The flange that connects the stock downpipe to the short straight pipe broke so the straight pipe hangs like 2" - 3" lower than the downpipe. It is loud as hell. I have to drive with the radio turned all the way up just to drown out the noise.

 

after 4k, it screams

 

You people need presilencers

Unless you like it that loud, whatever floats your boat

 

on my T2 i have downpipe/mid pipe/no cats/RP 50mm catback...its not too loud...a nice hum, but not annoying at all. if i rev it out it certainly gets louder but the whoosing from the turbo usually gets my attention first and i don't pay too much attention to the exhaust...

i'm planning on swapping my N1 catback off my n/a and putting it on the T2. with that in place it should be a bit louder

 

I still didn't get the answer. Is this setup safe. All of you that had this on your car for some time where everything is open no cats, how safe is that? Would it be better to put stock downpipe and catalyc converter back or is this better?

 

as long as you have enough fuel to keep up with the extra boost your car is fine. a FCD is a must, as is an upgraded fuel pump. bigger injectors woudnt hurt either. i have a fully open exhaust and the TID mod. to keep everything safe i run an FCD, walbro fuel pump and i just installed 720cc injectors. i also hve an Apex S-AFC to install as well. but the point is, as long as you have enough fuel gong into your motor, thenits perfectly safe to run an open exhaust. im assuming that this is for a T2. i wouldnt know on an N/A.

 

I have all of that except injectors, they are stock. As you can see from my signature. As long as it's safe for my engine i'll leave it on then.

Thanks for response.

 

well in your sig you already have FCD...and a better fuel pump...AND s-afc. the only thing you're possibly missing for a complete list of fuel upgrades is the 720's. if the car is tuned right otherwise and you're not running too lean a downpipe isn't gonna blow up the motor.

if you want you can port the hell outta your wastegate to significantly cut down the boost and then turn it up to where you feel safe via the boost controller...

 

my 88 tii is pretty reasonable except when at high rpms. it has a deep rumble, not ricey

my 86 n/a is extremley loud, afraid to drive it at night. it might be a little ricey, but i get more people wanting to race it then my tii and i've only had it for 2 days

 

my **** is loud as hell i guess the bridgeport doesn't help any though! lol
4" down pipe to 2 3" duals with HPI cans on the end all straight pipe and stainless steel

 

hahaha..your hach drags video is testament to that!

 

tru forgot about that vid!

 

even though i have the racing beat presilencer its REALLY LOUD!!!

the reason is because i went single 2.5" pipe that spits out the driver side since the presilencer is already slanted to the left. there are no cats and the muffler is a straight through dynomax!

 

Boosting FC- one thing I would personally worry about w/ your setup even if everything is set up for enough fuel is that when you let the stock turbo boost up to 14psi or so it is really heating up the air charge as it compresses it as it is "overspinning"-operating way above the rpm it was designed to be efficient at. This heightens the chance of detonation. If you port out the wastegate alot it will lower your boost to a reasonable level, but you will still have the danger of boost creep-cold night near redline in 5th can do it...

 

what u na folks know about some rb headers to rb midpipe to apexi gt spec cat back!!!!!!!!!!!!!!!!!!!

 

right now with this setup i'm hiting 9-10 psi, i'm not even close to 14.

 

Are you sure about your boost? I have heard Autometer guages are not accurate... My set-up was 87TII-Walbro+rewire+89 alternator, FCD, TID, RB downpipe+presilencer+stock catback, Greddy electronic boost+A/F ratio guages, and a hugely ported wastegate. Boost above 2000rpm at 7psi always except under extreme load- then it would creep up to 12psi (like nearing redline in 5th). Your turbo may be ailing as well?

 

Hey BooST have any new pics of your wild car?? Do you have the back all domne and painted? IM anxious to see how it all turned out.

lates

ACtion

 

actually i just installed a new catback.
so overall i have a 3 inch mindtrain downpipe, gutted cat, 3 inch Y pipe, so straight through Sebring mufflers.
Its all welded in.
Overall its much louder then my old HKS 60mm i had on.
from idle to about 3k, depending on how much gas i give it, its a loud deep wine(great sound), after that the sound transforms into a chainsaw on steroids all the way up to redline.
VERY COOL.


Mike
87 t2