Forced Induction - Magnuson MP112 Baseline test/results

had a fantastic time working with oxidizr on the MP112 baseline test/tune. Understand when I refer to "we" the emphasis is heavily favoring the tuner and not myself.

The goal was to optimize the current calibration/setup, taking a stock Radix with basic bolt-ons as far as we could while staying safe for daily driving. Some interesting things of note, 1st, while we did the bulk of our testing with the converter locked. We saw no power gained from testing unlocked, the power curves essentally lay on top of each other. 2nd, due to the 2500HD converter being considerably looser than a typical 1500 series, we weren't able to lug the motor as low as I had originally thought we might, however it was consistent at its lockup point. 3rd, 7lbs of boost. 4th, all data corrected to the latest SAE standard. 5th, fuel pressure was 63psi at idle and 63psi WOT/6000rpms 3rd gear(in tank Walbro). 6th, all runs conducted with hood closed.

Max power gains over the stock magnacharger calibration are: +8rwhp, +9rwtq. However, the real benefit observed is with the power under the curve. You can see on the dyno graph the sections in the power curves that are +15rwhp +15rwtq. The net result is more usable power, sooner.

I am very pleased with the final baseline results that repeatedly showed 430rwhp/440rwtq. Figuring 18% driveline loss, roughly 505hp/520tq at the engine. Just after I bought the truck in late 04 I had it dyno'd bone stock and made 245rwhp, so for a stock LQ4 Radix setup(3.1" pulley) with basic bolt-ons (LT's, dual exhaust, CAI), and a custom tune, I'm pretty happy with the results so far as I'm up approx 185rwhp.


http://img.photobucket.com/albums/v625/moregrip/DSCN2020.jpg


http://img.photobucket.com/albums/v625/moregrip/DSCN2021.jpg

Is this still with a 78mm t-body? Are there any 90mm t-body inlet upgrades available for that blower yet? That is the biggest restriction on the MP112 kit.

For examples:
my previous '69 - MP112, 78mm, 348ci, ported 6.0 heads, 232/232 114 cam = 505 rwhp @ 9 psi
my '05 Vette - MP112, stock LS2, 90mm, 230/230 114 cam = 550 rwhp @ 5.5 psi

both vehicles have offroad longtube headers, dyno tuned, pump gas.

Is this still with a 78mm t-body? Are there any 90mm t-body inlet upgrades available for that blower yet? That is the biggest restriction on the MP112 kit.

For examples:
my previous '69 - MP112, 78mm, 348ci, ported 6.0 heads, 232/232 114 cam = 505 rwhp @ 9 psi
my '05 Vette - MP112, stock LS2, 90mm, 230/230 114 cam = 550 rwhp @ 5.5 psi

both vehicles have offroad longtube headers, dyno tuned, pump gas.

I agree, first the TB, then the MAF(size of the opening). Yes, this is with the 78mm TB, and a 90mm conversion does exists, lots of room to grow here:)
here's a pic:


http://img.photobucket.com/albums/v625/moregrip/DSCF0994.jpg

here's a good pic with the TB mounted

http://img.photobucket.com/albums/v625/moregrip/DSCN1250.jpg