Over boosting

[Al's Clone]

Im a fairly new owner of a Syclone, Its basicly stock with the exception of a chip, 3 inc exhaust and no cat. Im experiencing boost of up to 20lbs . Im considering putting on a cat to solve the problem. Could anyone reccomend a good cat?

 

[gmcturbo]

Re: Over boosting

why not save that money and put on an external wastegate?

 

[wheels]

Re: Over boosting

Im a fairly new owner of a Syclone, Its basicly stock with the exception of a chip, 3 inc exhaust and no cat. Im experiencing boost of up to 20lbs . Im considering putting on a cat to solve the problem. Could anyone reccomend a good cat?

if you dont have a cat, that would cause overboosting.

 

[SeattleSy#1255]

Re: Over boosting

external WG and a good boost valve will solve the problem...

your problem is likely due to the stock WG being undersized, with the cat off it doesn't have enough back pressure.

 

[Al's Clone]

Re: Over boosting

Thanks for the advice, wouldn't a external wastegate be more expensive. If i used an external wastgate wouldn't i also need a new down pipe? I appreciate any advise

 

[SeattleSy#1255]

Re: Over boosting

external mounts to the crossover.

http://www.sytyarchives.com/howto/viewarticle.php?article_name=external_wastegate.php&dir=engine

expensive....275 or so for WG and flange at RPM...

i have a boost valve i'd sell you for cheap...never used still in box.

 

[cloneman315]

Re: Over boosting

or try porting out the 02 housing might help