[LesBaer]

Originally Posted by laynlo15

I think Wiki is correct about the Direct Injection. There are a couple members with Heartbeat Magnachargers with no issues that I know of, one has run 10.81@128 w/A8. The technology of today is new school and old school doesn't seem to mean anything with this new stuff. You are right that you would typically run a lower compression ratio with turbo's or superchargers since your adding boost to the cylinders. My SC G8GT was about 10.5 to 1 and I just ran 93 octane without issues.

I could be wrong but I think that was Magnusson's test car, which just had the Heartbeat installed, a tune (not sure if it was their stock tune or a custom one) and nothing else. If there's another forum member here with the Heartbeat besides myself, I'd love to know who it is.

[Atomic Ed]

No Heartbeat here, but daily driving an E-Force, which is basically the same Eaton 2300 guts in the SC.

I'm putting it on the dyno tomorrow to get some honest figures. Edelbrock claims 580 rwhp from the E-Force, but I'll be surprised if it hits that number. (Their graph also shows a stock LT1 at around 440 rwhp......don't think so.) Knowing dyno numbers are just that, numbers, but it will still will be interesting to see real world output. My estimate is around 540 rwhp, given Edelbrock's need to tune conservatively.

I'm currently running a Garrett 2871 turbo on my Audi at 24 psi. The Audi has a 9.3 CR and is limited by the turbo, not the CR. These high pressures are on a stock block and heads, with a set of J.E. pistons. Any higher psi on the turbo and the head starts to lift.

Tuning is everything with any forced induction.

[LesBaer]

Originally Posted by Atomic Ed

No Heartbeat here, but daily driving an E-Force, which is basically the same Eaton 2300 guts in the SC.

I'm putting it on the dyno tomorrow to get some honest figures. Edelbrock claims 580 rwhp from the E-Force, but I'll be surprised if it hits that number. (Their graph also shows a stock LT1 at around 440 rwhp......don't think so.) Knowing dyno numbers are just that, numbers, but it will still will be interesting to see real world output. My estimate is around 540 rwhp, given Edelbrock's need to tune conservatively.

I'm currently running a Garrett 2871 turbo on my Audi at 24 psi. The Audi has a 9.3 CR and is limited by the turbo, not the CR. These high pressures are on a stock block and heads, with a set of J.E. pistons. Any higher psi on the turbo and the head starts to lift.

Tuning is everything with any forced induction.

Good luck with it, I'm sure you're really enjoying it and will love it even more with a set of long tubes. I'd definitely go get a custom tune from someone who knows what they're doing with our ECU and the LT1. I could be wrong, but odds are that the stock tune that came with it wasn't very well optimized.

[Obsol3te]

Originally Posted by LesBaer

I've never heard of a single person running on 5psi on a gen6. I don't even think that's possible to do. Actually I don't even know of really any other people (non-vendors) running a super charger than myself. I've heard of a few people that bought Pro Chargers, but I haven't heard much from them once their parts arrived. Maybe they're out enjoying their cars, or maybe there's more to their stories than we know...I really don't know.

All I can do is speak to what I've done with my car, which I drive every day. I'm running on 6psi and could go slightly higher on pump gas, but I don't need to. When I first modded my SS, I had the car dyno tested with just the American Racing full long tube system and I gained almost 20rwhp. Then add the Maggie (and a professional tune), which is so efficient that at its stock level of 6, I'm putting down basically the same power as the new ZL1 (estimated by adding 15-20% to rwhp for hp at the crank) . You have to remember, this is a completely new ECU. We don't have the same engine control module as the C7. Eventually people are going to figure out how to do the same things that are being done on the Z06 to improve fuel delivery. It's just very early in the game right now.

The thing is for me personally - even if I could go higher - I wouldn't. There are other mechanical differences between the ZL1, Z06 and the SS beyond just a boosted LT1 engine. Once you approach 130mph, you also start to notice the aerodynamic limitations we have vs. the C7. I don't drive at that speed, but can get there and beyond in the blink of an eye. I'm very happy with where my car is right now. It's a beast and it sounds incredible. I've gotten all the meat left on the bone without having to worry about snapping the bone. So far I've put about 2k miles on it since adding my mods and I haven't had any codes or mechanical issues. I'd like to keep it that way

I thought I had read about that in another thread here in the FI section. Really I was just curious how the N/A Camaro's were doing in regards to forced induction. Id like to learn what else is out there, i've been out of the car game for a hot minute and just recently last year I got back in. Its hard to believe now how these motors perform and how much power they make stock, let alone adding in a little boost.

I'm sure once there's more time on the ECU on these cars they'll start to wake up even more.

[Atomic Ed]

Originally Posted by LesBaer

Good luck with it, I'm sure you're really enjoying it and will love it even more with a set of long tubes. I'd definitely go get a custom tune from someone who knows what they're doing with our ECU and the LT1. I could be wrong, but odds are that the stock tune that came with it wasn't very well optimized.

Thanks for the input. I agree that at some time in the future a set of headers, a CAI, and a good tune would add a lot. I'm new to the PD ownership and I am becoming convinced that this is the way to go for a DD. I'm now thinking about selling the Audi TT with the big turbo because I just don't think I'll be driving it much. It's a fun car, but temperamental to drive with the boost hit. (Something like a centri?)

I do note that your long tubes only added 20 rwhp. Given the price of a full exhaust setup, I don't see this as a "must have" at the moment. Frankly, I like the relatively quite exhaust setup right now and may only do long tubes with the stock exhaust. I think a CAI and a tune will yield the best "bang for the buck" for this setup.

I also agree that Edelbrock has to tune conservatively to reduce their exposure to "your SC blew up my engine" lawsuits. So I plan to just drive it and enjoy it for a while to stay in the warranty window. Maybe I'll get it tuned later when I'm satisfied the bugs are worked out and I'm confident that I won't need the warranty.

I've learned through the years that someone else will always have something faster/quicker/more powerful than I have. I now just go by what gives me the driving experience I want and leave it at that. As it sets, it's a great all-around package; may not change a thing.