Supercharger with tuning now available?

[Chrispy]

Originally Posted by WA 2 FST

A Kenne Bell at 6-7psi would be significantly quicker than a centrifugal at the same boost level, especially given the vehicle weight + auto trans.

Shoot, even a decent M112 Eaton would make tons of TQ/HP to 6000rpm.

Positive displacement blowers are excellent for relatively heavy vehicles.

Don't get me wrong... love the high-winding centrifugals (had a 615rwhp Mustang in the mid-'90s that went 10s in 100% street-legal trim, back when 10s was fast), but to take real advantage of that type of blower in this car, you'd want to lower compression and run lots more boost, IMHO.

If these motors are as strong as advertised (and I haven't done enough research to know), then they should easily handle a little boost with proper tuning.

Yup I agree for sure...I am interested to see who is first to market with this

[Kaisersteiner]

Yes- Waiting on positive displacement blowers too...

[Moose]

Originally Posted by Chrispy

There is a lot of FI expertise at Diablo right now, one person I know personally has been a pioneer in this area for years on the LSX platform…I’ve also been running blowers on EFI high compression cars for 13 years.

With the low levels of boost we are looking at (6-8 pounds) and the ability to scale injectors, part throttle fuel/spark, WOT fuel/spark, you’ll have no problem with the SRT8 living on boost. (6#s would be cake with A2A intercooling)

60# injectors
Dual pump or big single fuel pump
Boost referenced fuel pressure regulator
Meth injection as an additional safety option
Colder plugs gapped at .030

I love the simplicity of prochargers and their A2A intercoolers/self contained head units. An 8 rib D1SC kit with 3 core intercooler would support 750RWHP on our cars easily (if running forged internals) and would barely be working at 500RWHP)

I think the KB kits would be awesome as well especially the area under the curve and tabletop torque they produce.

Anyways, I have full faith that Diablo will setup a very safe tune for these cars and they’ll make awesome power. SCT will also put out a good tune I am sure but I am confident in Diablo.

After I wrote my post I thought about a low 'poundage' working. I'm going off a normal 8 to 10 pound boost. These cars are not built for a high pound rating and will not hold up. All the kits also have a written claim that they are designed for forged engines.

Have you ever seen the rods to these engines? They are WIMPY...

I do agree with you 100%.

[Moose]

[quote]

Originally Posted by WA 2 FST

Don't get me wrong... love the high-winding centrifugals (had a 615rwhp Mustang in the mid-'90s that went 10s in 100% street-legal trim, back when 10s was fast),

What? Are you saying that "street legal trim" is street tires and no stall? No way you can pull off 10's like that...

[WA 2 FST]

[quote=Moose;559270]

What? Are you saying that "street legal trim" is street tires and no stall? No way you can pull off 10's like that...

I'm sorry if I misspoke. I meant to say the car was street legal. It had cats, and it passed a sniffer test. I drove it on the street often. At the track, I'd bolt on DOT slicks. It was a 5-speed, so there was no converter to mess with, and no I didn't go through transmissions. The car ran 10.6 @ 134.xx, so obviously I didn't have it set up as a 100% drag car (134mph is good for low, low-10s with everything set up properly). It ran low-11s on low-profile Nitto drag radials. Nevertheless, I could have driven on the street with DOT slicks and it would have been considered 100% street legal. I didn't enjoy doing that, though. I like going around curves too much.

My LPE Z06 runs 11.2 @ 136mph (9.8 sec ET capable) the way I drive it on the street all the time. I drive the car to the track, get 28mpg on the trip, let the car cool a little before pulling up to the staging lanes, make a couple of passes, and drive it home. No tire change. This nets me a pitiful 2.0x 60' time, as I don't enjoy the prospect of changing clutches often or busting half-shafts. Just a little more power and it would run 10.90s on street tires. Considering a boost controller that will allow me to raise boost halfway down the track once I have traction in 3rd gear.

[Chrispy]

[quote=WA 2 FST;559435]

Originally Posted by Moose

I'm sorry if I misspoke. I meant to say the car was street legal. It had cats, and it passed a sniffer test. I drove it on the street often. At the track, I'd bolt on DOT slicks. It was a 5-speed, so there was no converter to mess with, and no I didn't go through transmissions. The car ran 10.6 @ 134.xx, so obviously I didn't have it set up as a 100% drag car (134mph is good for low, low-10s with everything set up properly). It ran low-11s on low-profile Nitto drag radials. Nevertheless, I could have driven on the street with DOT slicks and it would have been considered 100% street legal. I didn't enjoy doing that, though. I like going around curves too much.

My LPE Z06 runs 11.2 @ 136mph (9.8 sec ET capable) the way I drive it on the street all the time. I drive the car to the track, get 28mpg on the trip, let the car cool a little before pulling up to the staging lanes, make a couple of passes, and drive it home. No tire change. This nets me a pitiful 2.0x 60' time, as I don't enjoy the prospect of changing clutches often or busting half-shafts. Just a little more power and it would run 10.90s on street tires. Considering a boost controller that will allow me to raise boost halfway down the track once I have traction in 3rd gear.

Very nice!! I drove a six speed Turbo TA to 10.9s @ 129 in the dead of summer on ET streets and also another TA 10.3@ 136mph in the summer as well. (D1 blower)

That is the great thing about FI cars, you can set up them with mild emissions legal blower cams, run cats and make excellent hp/torque. They are a lot of of work to setup/dial in but once there they are great

[WA 2 FST]

Yep... if you live in an area where the emissions-Nazis are out in full force, then FI is the best way to get ridiculous HP/TQ numbers. And with the relatively small camming needed, they tend to have good street manners.

I think a 5-6psi positive displacement blower on an SRT8 LX would run low-12s, be daily driveable and the drivetrain should be able to handle it.

[Chrispy]

Yup for sure, its pretty exciting that the tuning is available now for these cars.

Next year should be awesome with the centris and KB/Whipples starting to come out

[Someguys300c]

[quote=WA 2 FST;559435]

Originally Posted by Moose

It was a 5-speed, so there was no converter to mess with, and no I didn't go through transmissions.

so you must have been using a Tremec aftermarket 5-speed, or the like. the stock T-5 in a mustang is pushing its limits at 400hp. let alone at 615hp.

[WA 2 FST]

[quote=Someguys300c;560110]

Originally Posted by WA 2 FST

so you must have been using a Tremec aftermarket 5-speed, or the like. the stock T-5 in a mustang is pushing its limits at 400hp. let alone at 615hp.

Yes, it was a Tremec TKO... and those honestly are not rated for more than 450hp and that's at the flywheel, not rear wheels. But I never had a problem with it. However, I used a stock T5 into the 535rwhp range, and didn't have any issues with it, either. I sold it before it broke. Clutches were a different story, but that's life racing on slicks/cheater slicks.