De-cat Power Increase?

[veilside_mr2]

Whilst gettin my new turbo fitted today ive found out that my car still had the cat.

Now its gonna be removed with the new downpipe what sorta power increases would I expect from this? bearing in mind i`ll be runnin 15psi on the gt28rs turbo? will it make a big difference? also he said that it will make the boost increase automatically (im using solenoids)...is this true?

[mrmr2]

dont know too much as far as turbo's are concerned but i know de-cat can give you up to 9% power increase, on a modded car it normally makes up for mods like big that have taken the edge off ya motors speed if thats any help?

[KiwiMR2]

Damn....your gonna be really moving along!!

Removing the car & replacing the DP will provide a pretty big HP increase compared to most other mods.....you will see anywhere between 2-5 rwhp at least, not to mention it will spool up like a mother!! Hope ya got some good boost control ;) it will hit 15 psi in no time & as the rev's get higher (and in higher gears) your bound to see a lot more than that. What are you doing regarding a wastegate??

Cheers

KiwiMR2

[veilside_mr2]

erm as far as i know the turbo kit comes with a wastegate?..internal tho..not external.

[james1760]

gt spec turbos... nice!

just out of intrest do you guys change the engine management on these big bhp mr2s? or do you just chip+live map them?

have you ever heard of autronic management? works verywell with the gt spec turbos!

[Jimlad]

I'll be going this route next year... I'll be using my unichip and getting it remapped.

[Jesus]

Big difference with de-cat pipe (Aussie pipe includes improved turbo elbow too). You'll wish it had been done sooner. Notice more so at the top end.

The weight saving alone is laughable. The stock CAT comes in around 20~odd kilos... the Aussie pipe is just a few kilos!