is there any way i can limit creep without porting the wastegate? i will be keeping on my stock cat. i am looking for a cat back soon. thanks

randy

 

if u're not getting creep now and all u're doing is adding a catback + retaining stock cat you should be fine without porting the gate. anyone disagree

just noticed u have a smic, lets wait for the experts to see if u might need it. but really.. wastegate porting is the only way. boost controllers will not save u from creep

 

I would have to agree with sevensix you shouldn't have any problems with creep just adding a catback. you really only have to worry when you have a downpipe mid pipe and catback.

 

You will not have any creeping issues with just a cat-back. The stock cat's inlet diameter is very restricting, which will greatly limit your exhaust flow.

Though, to answer your question throughly, there IS another way to limit creep if you do experience it. Getting a restrictor plate (basically just a huge exhaust gasket) will limit your exhaust flow.

 

The stock cat and boost creep never happen at the same time. Creep is rare even with a high flow cat.

 

Since you have a main cat, you won't get boost creep. However, you can still overboost. With a stock ECU, you will need a boost controller to keep the boost at 10 psi. I have a manual boost controller that we can install on your car if you like.

 

a boost controller with do NOTHING to KEEP boost at 10psi, you can only make it higher, not keep it lower.

 

That is an ignorant statement. Next time, do a little research before foolishly opening your mouth.

 

do a boost controller. i never had a creep problem, but i got one anticipating it...and yes it can keep the boost down ...thats the idea in this case.

with the stock cat you will be fine. just dont be dumb and throw on a mp, you have the right idea.

 

A cat helps to introduce restriction to help manage and control boost. However, when you add flow mods such as a downpipe, cat-back exhaust and intake, you are now flowing more air and this can overpower the stock boost control system which was designed to manage air flow with those restrictions in place.

An electronic boost controller has a faster acting solenoid and different electronics to manage boost more effectively than the stock systems. One of the benefits of an electronic boost controller is that it is not affected by changes in temp throughout the year.

Manual boost controllers are nice and simple, but I often found myself having to adjust them regularly as seasons/temps changed.

 

Given the mods in the OPs signature, I second Adam's recommendation for a boost controller. With that you'll be able to set your boost as low as 8 psi or as high as you want. (Whether going higher is allowed is another matter entirely)

 

Well if you do decide to install a high flow unit.. Restrictor plates in the exhaust seems to work fairly well for other people. It is lame, but its really the only other option besides porting the WG.


Any Novice should be able to port the WG, it is not a hard task. You could do the vac hose job while you are in there too. Amongst other maintanance.




=Ben

 

Thanks Adam, I've been on the market for an exhaust and like i told you before I'm already boosting to about 11 psi. So I thought adding an exhaust would make me overboost, if not start to creep.

Wouldn't the restrictor plate idea be be contradicting adding the "flow" mods themselves, since it kind of creates a bottle neck for the air, just like any peice in the stock exhaust would? thanks.

also im a little intimidated of porting my wastegate, because i've never done anything that extensive on my car, but I won't be afraid to tackle the job if necessary. wanna help me out with it, Adam?


thanks for the posts
randy

 

Randy,

There is no need to port your wastegate (or put in a restrictor plate), since you won't be getting boost creep. Lets install the manual boost controller on your car (free), and go from there. Once it is installed, you can put on whatever cat back you like, and adjust the controller easily if it needs it.

Adam

 

Thanks Adam, but I couldn't just take it off your hands like that. Let me at least pay you for it.

 

Call me & we will set up a time to install it .