I have a 2006 r53 automatic. Y have currently installed 17% alta supercharger pulley, 2% alta crank pulley, and alta intake. I have also installed Tein lowering springs and alta rear adjustable control arm. What would be the next upgrade i should do for power? Injectors? Exhaust? Please let me know thank you.

 

You've got some good upgrades under the hood. Look into the Remus exhaust. Good exhaust note and quality product. I like to really focus on dialing in my suspension before really going any further into engine modifications. To complete the suspension look into a rear sway bar here. You can also look into powerflex suspension bushings, which give you prolonged tire life, improved performance, better handling and they are more cost-effective than OEM bushings. Some good info in this thread here on NAM as well.

 

An exhaust, injectors, tune, and VibraTechnics motor mount would make great additions to your current mods.

Any issues with pinging running a 17% and 2% crank pulley? What octane gas do you run?

 

What exactly do you mean by pinging ? Sorry�� and 91 octane. ��

 

The mini pulls pretty hard considering those are the only mods ive done to it im really njoying it

 

That's a lot of boost, how sit cope?

 

It runs great the only thing is that im getting a lean in bank one code dont know why. Maybe i need bigger injectors but im not sure what do you think?

 

Not surprising with that amount of boost, you need injectors and a tune and meth to run it optimally. IMO

 

I run JCW 380cc with a 15% just to be on the safe side, so yeah with a 17% I'd run at least that.

 

Ok thank you all for everyhing probably will go for the injectors next then everything else

 

I believe there's a set for sale in the marketplace

 

Where can i get the 380 injectors for the best price if you dont mind me asking?

 

Not exactly sure how to describe pinging or knocking, but your engine can blow up if ran too long under those conditions.

Usually with a 17% it's safer to use 93 octane, minimum. Adding the 2% crank pulley makes it worse. If you frequently run your car hard the next mod I would do is a custom tune, injectors, and exhaust at the same time because they can affect your tune.

 

Ok thank you i will look into that.

 

What would be the best tune available?

 

It depends on where you live and how much you want to spend. A lot of people like RMW in Southern California or Way Motor Works in Atlanta for custom dyno tunes, but if you don't live close enough to them to go in person, you usually have to buy an interface for about $300 to load the tune remotely. That would be in addition to the tune itself. There are also "canned tunes", which are like generic tunes based on the mods you have. They're usually cheaper and less aggressive, but still need to be loaded remotely, unless you send your ECU out to them.

Do a search on tunes, there's a lot of info on this site and others... way more than can be given in a single post.

I went with the factory JCW tune since I have everything from a JCW, except the head, and I was able to get it under $200 from a dealer. If I was closer, I probably would have gone with a custom RMW tune, but the JCW tune is good for now.

 

I would suggest getting that crank pulley off of there and getting a FluidGel or ATI pulley. Your motor will run a lot smoother and you won't be over spinning your supercharger, waterpump, and accesories. One of the things that is saving your motor right now is that it is an automatic trans and they don't rev very high before shifting.