Need for a tune after HKS SSQV BoV install ?
 

Hi folks, generally new to the forum, I have a new shape 2014 STI completely stock, been waiting to pull the trigger on a HKS SSQV BoV (http://scoobyworld.co.uk/catalog/pro...oducts_id=1237) along with an Invidia R400 cat-back.

I've heard two sides of the argument that you need a tune after a BoV install because of MAF readings, creating rich and lean conditions which the ECU tries to counter, resulting in pops and bangs.
So is it safe enough to run a BoV stock tune as PSi I'm running is stock, or do I need a tune also ? If I've missed a forum discussion on this topic let me know.

Thanks in advance :)

If you are just fitting the BOV you will be fine.
The miniscule amount of affect on the AFR`s to your mpg will be the same as acclerating quickly that 1 extra time off the lights

So you think if I go with exhaust and BoV I would need a tune ? But either or I should be fine stock tune ?

The Invidia R400 cat-back is a more free flowing exhaust compared to stock, you wont "need" a remap but, you may find the better exhaust actually hinders power a bit , maybe not noticable on the road though.

The R400 catback is 3" and the standard system is 2.5" How do you plan to mount the exhaust to the standard downpipe?

You may well need a remap if you're freeing up that much exhaust restriction.

Its a 2.5, its on borrowed time anyway :lol1:

@BrownPantsRacing I believe there is an adapter from downpipe to 3" mid pipe available, I've researched around and people saying stock tune fine for exhaust, I'm curious if a catback and BoV would be enough to categorize a "Stage 1" remap. I know aftermarket intake and catback would be.
Again, open to advice and opinions :)

Aftermarket intake is not "stage 1" tune. a typical "stage 1" tune will be an uprated panel filter not CAI system. You can run the standard airbox with an uprated filter happily up to 400bhp.

If I were you I'd get it mapped with the upgrades on anyhow, will transform the car. No point fitting these upgrade parts if you're not going to make the most of them with an ECU tweak.

Also worth upgrading the fuel pump.

I didn't say a change of panel filter would take your car from 300 to 400bhp. Blimey.

I was suggesting parts worth upgrading. There are sticky notes on this site that will help you greatly with upgrade paths. You would do well to look at these, they are very helpful indeed.

Wtf is a tune....stupid Americanism
it's a remap

Ive fitted a 3inch system to a standard size downpipe using original conical gasket, springs and bolts. I made a 5 mm spacer ring to push the conical gasket forward. It is possible.

Have a look through this thread and read the tuning guide in the link, it's a great starting point.

https://www.scoobynet.com/934398-eng...g-guide-4.html

Tomatoe / Tomatoes ;)