Do I need a Tune for an intake?

[NP_Wagon_Chick]

Hi

Noob question... I got an intake from Perrin about a year ago and was told by Perrin (They are literally 5 minutes from my house) that I did not need a tune if all I was adding was the intake, and no other mods. So I have been running this intake for a while and recently started having issues with my car cutting out around 3200-4,000 RPM when under a load and called the local COBB guys to make an appointment to have it checked out.. Long story short, they said I needed a tune for my intake and that There really is no proof one way or another if that is true, but it goes against everything they know about STI's (New mod = new tune).

Thoughts? So far, two shops say two different things. I will likely end up getting a tune because I think my stumbling issue is the Fuel regulator and our awesome winter gas, but what are your thoughts on whether a tune is needed for just an intake?

 

[IGOTASTi]

What size intake did you get from Perrin?

 

[HolyCrapItsFast]

The only thing that has me question Cobbs's take on it is that it was running fine and now it's not. That suggests some other issue to me.

 

[NP_Wagon_Chick]

I purchased the only intake they had for the 2011 Sti. I Wasn't aware there were sizes?

I think my current issue has to involve the fuel, but as we were talking about why I wanted to make an appointment COBB told me I should have had a tune for my intake, which I had been told opposite. I thought the two opposing opinions were interesting..

 

[Alin]

Its always detrimental that you get a tune whenever something to the engine is alterred. There have been false statements made by a few of these intake companies that at first stated the car does no require a tune, only later to find out the company has changed that statement.

But youve had the intake on for about a year and had no issues up until now.. What variable has changed recently?

 

[NP_Wagon_Chick]

As far as the cutting out/stumble issue, it has done it since I got the car (at 15k miles) but it wasn't very noticeable. It has gotten worse over the last few months which I assume has more to do with the fueling system ?

I just thought it was interesting that I was told over and over i did not need a tune for just an intake, only to call another place today and be asked specifically if it was tuned for it. - they only asked so they knew what was done to my car. - Then I felt like a dummy when I said no!

 

[Alin]

There is quite a lot of misinterpreted information out there. We have a few stickies that clear a majority of these opinions such as this one: http://igotasti.com/vBforum/showthr...i-s-Please-Read-This-Before-You-Harm-Your-Car!

 

[NP_Wagon_Chick]

Thank you, that is very helpful. I have an appointment at COBB Surgeline in Portland this weekend where I hope they can help my car run a lot better, without talking me into too much unnecessary nonsense..

 

[blee2666]

You need a tune. I had a 07 STI and had a KN intake with no tune. Drove it for about 6 months and told that it was running very lean. Checked around and you really should get a tune. Cobb on supports AEM and cobb intakes so I sold my KN on craigslist Traded my 07 for a 13 STI and got a Cobb intake and a Grimm Speed EBCS. Went with a OTS stage 1 tune for about a month before getting a DP and going stage 2 and protune. 292 at wheels and 360 torque after tune.

 

[NP_Wagon_Chick]

OK, thank you! That is probably not helping my car then. Along with the crappy gas around here and my "stumble". I feel like I am tuning my Banshee all over again, but 10X's the cost!