Supercharged ... Questions

Hi Folks; I have a '17 that I've put the Magnuson S-Charger on(exhaust, etc) I'm looking to drop the pulley size a touch and increase to 8 psi from the 6 psi provided by Magnuson. WILL this require a new tune altogether or will the computer compensate? Also what is the consensus for max boost a stock engine can take safely? Think I'm gonna upgrade the fuel pump and filter as well. THX for reading.
Cobramedic48@hotmail.com

 

There is a huge thread dedicated to the supercharger with some recent discussion on smaller pulleys. From what I remember the stock fuel system can handle dropping down one pulley size but no more than that

 

'One pulley size'... Is that the 2.825 from URD maybe??

 

As mentioned there is a thread with lots of info https://www.tacomaworld.com/threads...acoma-unboxing-install-diy-dyno-video.693562/

For a quick answer. The stock pulley is 90mm. It's been found you could drop to an 87mm pulley and be safe with the supplied Magnuson tune. It will gain about 1ish PSI of boost.

87mm pulley https://magnusonsuperchargers.com/products/57-03-06-087-bl?_pos=1&_sid=d3d37d464&_ss=r

I ordered one about 2 weeks ago still waiting for it....

 

Hmmmm...Big difference here in understanding of the size of the stock Magnuson pulley . I thought it was 3.0 inches 76.2 mm I'd better get this straight before I go ordering parts

 

The size is in the part number on the pulley. So you can look at yours if you want to confirm that it's 90mm.

 

Thx for all your help, Brother. When you get yours put on, please post if you're pleased with the results

 

If I remember correctly, back in the OVTune days and his twin turbo kits, I believe the max boost the stock fuel systems can take is 10 psi