D1x? He wants 650whp...
It will make 650....and he will want more down the road. Been there done that.
I don't really agree with that, but that's fine.
which part don't you agree with?
The d1x for 650whp. But the OP can make the decision that best fits his need/wants.
I guess i'm looking at it through my own experiences. I would have said 650whp was enough when I bought mine back in 2013. But the cost for D1 upgrade was maybe $200 so it just seemed like a no brainer for the extra head room just in case. Ive been down that same road with my fuel system... bought what I though was enough and then it wasn't a year later. Did the same with headers. So for me, get the biggest head unit you can...just in case.
What's the car run?
Went 9.6’s&143 on 11psi. On 13psi now so I expect a .40 maybe .30. Gen1 motor.
That's my point. You can run that with a p1sc, so having the larger blower is of no benefit other than prepping for the future. But let's face it, not many run a built engine. Which is what's needed to run a D1x at full tilt. If it isn't at full tilt why have it? So if 1100whp isn't in the cards, why have a 1100whp blower? At 650whp, the smaller blower will outperform a d1x.
And that was exactly my point. It's a very small upcharge to be "prepped for the future". As far as the P1's outperforming it at 650hp...I'm skeptical. 650 is 650 and the 2 blowers spec out so closely in terms of size and specs that parasitic losses would be negligible.
Absolutely nothing wrong with that choice. Me personally, I'd just drop the extra $225 and get the most blower I could.
