you better get gas lol 50mile range is only gonna get you a couple blocks like that 😂

yea I ended up picking up my grandmother one city over and then made it almost home and stopped and got some

You Tube

Did grandma like the whistling noises? You didn’t give her whiplash did ya, lol?

Guys I’m swapping my cast 7875 for a billet 7875 right now. I have no Dyno numbers but I’m making only this change and I drive the car almost every day. So I will be able to tell you the difference I feel, if any. I’m really in tune to everything with the car. I feel that my butt dyno is pretty accurate to tell me if there’s a difference or not. I can give you guys my assessment if your interested.

Ok here’s my take on it.

1) sounds total different. It has less of a whistle sound
2) it appears to spool faster. And it’s only a very little bit. If I had to put a time on it, I’d say it’s about a tenth of a second faster. it is a noticeable less lag. Not that I had much lag before.
3) midrange feels a bit stronger. I’d say about 50-60ftlbs more.
4) checking logs and videos and comparing, it’s .2 quicker from 60-115mph.
5) the blowoff valve is louder for some reason.

i wont argue that, because it does spin the tires from a roll any differently. But the initial hit does feel stronger. Do I feel that it’s a huge difference? No. Im not sure if I think it’s worth the extra money. Im wondering if I should have skipped this unit and went to the on3 BMF 7675.

so do you think it would be a bad idea? I do have a good boost controller that should keep it in check.

Ah man, I was hoping the spool noise was louder with the Billet lol... love my cast vs 78/75 spool sound.

Viren said that the billet would only be worth about 8% increase in airflow at 11-14psi. It’s not till you get much higher 20+psi that you get the full 18% flow increase.

yea it wasn’t a big difference. I actually kinda felt at first it might not have did anything but after watching some vids, I’m convinced it has. I definitely feel like it’s not struggling after 6000 like it was before. I think I know what fooled me tho. After driving it more I’ve noticed the initial boost hit isn’t as abrupt as the cast. What happens is it starts to build boost sooner and the point it’s “building” boost, the cast is not in boost and all of a sudden it is. The cast comes in before and is in full boost around the same as the cast or maybe a couple hundred rpm sooner but say 500-1000rpms before that, it’s got a couple psi where the cast has none then all. That will fool you. The billet is faster and makes the car more responsive. I’m not sure if you saw the video in my build thread but I’ll post it here. This is on 8.5psi. Also I’m still running through full restrictive exhaust and a squeezed down pipe that is choking it. I’ll be opening it up more soon.

Instead of making you guys try the compare, I took screenshots to illustrate.

First one is aboit 60mph. The cast one is on bottom and has the lead (had to time then just right)




the billet one has taken over

Okay.

Thanks kfx

welcome.