Hi guys my car is all stock except for hks exhaust and ebay air filter it has ok power up until 4th gear then it sucks can u help me out!!oh it is a 87 n/a s4

 

Maybe its those rice cannons you got there?

Is it an auto? If it is, problem found.

 

No its a 5 speed what wrong with my mufflers they sound good and all custom exhaust from engine back

 

then thats not JUST mufflers then now is it? And they are huge fart cannons thats whats wrong with them

What do you have from the from to the back of the exhaust please elaborate.

 

What exactly do you mean by sucks? Does it feel like it hit a wall and just can't go any faster, or does it start bogging, or something else? Also, are your exhaust 5-6 ports open (since its a custom exhaust they will probably need to be wired open)? That is most likely the reason for the slowdown. Did it do this before you put on the exhaust system? Also about that air filter, you should have bought an APEXi or K&N, those generic filters suck sometimes.

 

Still stock exhaust manifold one high flow cat and all new pipe front to back.

 

It just feels like it has so much more power in 1st 2nd and 3rd also i thought u didn't have to wire open the 5th and 6th ports on a s4

 

First of all DO NOT EVER wire open the ports. Your only solution for maximum overall power is to FIX THEM!

S4's need to have an air tube hooked up to the auxilary port actuators and they need something around 4psi to open up. Unless they are stuck or jammed in which case you best get to cleaning them up.

 

Im new at this I have really no clue what your talken about what are auxilary port actuators

 

Do and a search and read up on them..

 

THey are the little barrel shaped things hooked up to your 5th and 6th ports which open them up at higher rpms to aid in power and stay closed at low rpms to make better low end.

 

You don't happen to have a pic do u Im stupid as u can see lol also what are some good injectors they suck to they dont seat right anymore and are half clogged.

 

U live in texas come check it out

 

You dont need injectors unless you have some massive porting or really extensive mods on an NA.

 

Where in Tx do you live? I am down south. BTW if you want to talk about other **** just hit me up on AIM my user name is santiagorx7


And I think i have a couple of pictures but I have to look for them.

 

I live near Waco tx in a little town called Bremond you might of heard about it on the news because our superintendent at the school stole like 300,000 dollars from the scholl ight will do mine is JCurry1500 on aim

 

You can buy new injectors from the forum(someones used/spare set) or many other places but victoria british is like 95 bucsk an injector. If your car can be down for a week or two then just have them rebuilt buy a company that does this.

 

Ight thanx how hard is it to get the primary ones off

 

Here is a shot of an actuator from my Sport

 

Can u come down and look u think

 

So wheres the HKS exhuast? Those look like cheap knockoffs.