[Eagle2000GT]

A long time ago in a land far, far away I read an article about a supercharged motor that had a boost controller. Its purpose at the time was to change boost levels from race gas to pump gas.

I have googled boost controllers. I know how they work but the ports on them look a bit small. I wanting to increase low end torque. My head unit is capable of far more boost but the rods and pistons won't stand for it. I was thinking if I doubled the boost but put a boost controller in at 10 psi I could get maybe 3.6 psi at 2500 rpms instead of 1.8 psi. But my motor won't stand for 18 psi at 6,000 rpms.

How small are the ports? Can they be used to vent pressure just before the BOV? Has anyone tried this?

[Shaun03GT]

Originally Posted by Eagle2000GT A long time ago in a land far, far away I read an article about a supercharged motor that had a boost controller. Its purpose at the time was to change boost levels from race gas to pump gas. I have googled boost controllers. I know how they work but the ports on them look a bit small. I wanting to increase low end torque. My head unit is capable of far more boost but the rods and pistons won't stand for it. I was thinking if I doubled the boost but put a boost controller in at 10 psi I could get maybe 3.6 psi at 2500 rpms instead of 1.8 psi. But my motor won't stand for 18 psi at 6,000 rpms. How small are the ports? Can they be used to vent pressure just before the BOV? Has anyone tried this?

Ive asked this question so many times! You would need a wastegate. A wastegate will open once you hit a certain amount of boost. Say if you pulley it for 18psi. And want it open at 10psi. You can do this with a wastegate with the right spring in it. And you can get an electronic boost controller to make the wastegate open at certain boost levels without changing springs.

The wastegate would go on the hot side of the piping (pre intercooler)

A lot of people do this with big blowers. F1-C, YSi's. People say the only drawback is making heat. Running a smaller pulley is making the blower turn more and creating more heat. But for instance, Im at almost the lowest pulley for my setup. 2.87, next is 2.62. And my blower doesnt create that much heat. Runs cooler then a turbo/PD blower.

I really really REALLY want to see someone do this for an entry level blower. I would love to run a better intercooler, powerpipe, and a 2.7 Reichard Racing pulley, it would probably hit 16psi, but wastegate it at 11psi.

[roosgt!]

Originally Posted by Shaun03GT I really really REALLY want to see someone do this for an entry level blower. I would love to run a better intercooler, powerpipe, and a 2.7 Reichard Racing pulley, it would probably hit 16psi, but wastegate it at 11psi.

I also though about this and might actually consider doing it.
Are the Novi 2000 considered a entry level blower still?
But im gonna try and make around 18psi on the new motor.

[Shaun03GT]

I would think so. A 2000 flows like a t trim and D1. I'm really curious to see how it would work

[jkolbfleisch]

Yeah, all the boost controller does is block a portion of the boost pressure in the line going to the wastegate. The wastegate itself is what opens and release after a certain psi at a certain point. I read that same article as I was really curious about it. I was really disappointed in how the centrifugal supercharger slowly builds linear boost and wanted it earlier on. The problem is you'll be workign the blower extra hard up top without the extra power to compensate.

[xXJayManZXx17]

sounds like a good idea

[ruger226]

928 Motorsports - Porsche® 928 Performance Parts - Universal Adjustable Boost Limiter Valve (BLV) Look into this. Some guy installed a novi 2000 on a stock 2006 dakota and used this to keep the boost at 10psi. Idk it it will help you double boost down low but it will limit boost.

[Eagle2000GT]

I think that might be what I was looking for. That and a 3.2" pulley. Reps.

[Scott2001GT]

All I can think of is you need a fitting on your blower like a turbo does. A manual boost controller should work fine. Look at turbosmarts website and go to boost controller and instructions on either manual or electronic boost controllers. IMO run a 3.0 pulley and get to your boost faster. The wg and bc will give u a very fun power curve that way. Should just up an flat line. Be interesting what torque does.

[Scott2001GT]

Also a 38mm will be plenty

[andres0286]

This sounds interesting. I may consider this on mi P1

[Kevin C]

I've thought about this before, it's a great idea. Spin the blower more down low to create a bit more low RPM torque, and then vent the excess boost after XXXX RPM just to keep your internals in check.

That would be super neat if you ran a setup like that, Eagle.

[stal94gt]

the idea works and sounds great but a p1 may not be a large enough unit. p1 head units fall pretty quick at the peak boost numbers and with that you may boost early but get excessive belt slip and boost drop with a p1.

[Eagle2000GT]

Yes, I think it would work better with a D1SC but I'm not willing to spend that much money. That why I was thinking about a 3.2" pulley. That should produce around 14 psi. With the boost limiter set at 10 psi it would probably hit peak boost between 4500-5000 rpms. I'm not sure it would need a new tune. It already hits 10 psi around 6300 rpms. But I'd probably get the tune checked anyway.

[Shaun03GT]

It would definetly need a tune. Not as much fuel has to be dumped in at 6psi as 10psi. So if your making 10psi where you normally would hit 6psi, itll probably run lean. Maybe not much, but could affect the car.

The only "bad" thing I can think of is, centris are known to be easiest on stock rods/pistons. So if you pulley it for 18psi and bleed off at 10, that hit in the midrange will do a lot more work to the internals vs just normally hitting 10psi.

Im going up to my tuners next Saturday for dyno day, so Im going to ask him about that. I dont really care about spinning the blower faster. S trims max rpm is 55,000. I spin mine at 52,000rpm by 6300rpm and 2.87 pulley. So if I pullied down to a 2.7 Reichard Racing pulley, ran a powerpipe, better intercooler, I could see 16-17psi, but wastegate it at 10-11psi.

Centris also dont create as much heat as a PD or turbo. I think people over react some.

[hardhitter]

I was going to do this but then I found out that you will lose power from spinning the blower harder to create the same psi in the higher rpm range

[Shaun03GT]

How did you find out? Because people "said" that. But none of them have tried it.

[andres0286]

Originally Posted by Shaun03GT It would definetly need a tune. Not as much fuel has to be dumped in at 6psi as 10psi. So if your making 10psi where you normally would hit 6psi, itll probably run lean. Maybe not much, but could affect the car. The only "bad" thing I can think of is, centris are known to be easiest on stock rods/pistons. So if you pulley it for 18psi and bleed off at 10, that hit in the midrange will do a lot more work to the internals vs just normally hitting 10psi. Im going up to my tuners next Saturday for dyno day, so Im going to ask him about that. I dont really care about spinning the blower faster. S trims max rpm is 55,000. I spin mine at 52,000rpm by 6300rpm and 2.87 pulley. So if I pullied down to a 2.7 Reichard Racing pulley, ran a powerpipe, better intercooler, I could see 16-17psi, but wastegate it at 10-11psi. Centris also dont create as much heat as a PD or turbo. I think people over react some.

You want to pick me up LOL

[Shaun03GT]

Where's Ur car? I thought you were bringing it up?

[MustangMatt96GT]

It makes no sense to... Let's create alot of extra heat to make more power lower in the rpm range.....