[NG329]

Originally Posted by SOCAL.M6.ZLE

PROGRESS UPDATE - DYNO NUMBERS...

OK, Sorry for the delay guys... been super busy with the new GMS Flex Fuel Kits, and some top secret goodies so the remote tuning has been slow.

That said, the tuning felt just about complete so it was time to head to the DYNO to see how much steam she makes now, and fine tune if needed. Although I made a lot of changes to the car while it was down...

1. Installed (for testing) our Stage.II Oil Cooler
2. Upgraded the gauges in our Stage.I Data Control Package to the PRO Versions
3. Installed our Monster Triple S Clutch
4. Installed our Ridetech Coil-Overs with BMR Lower Control Arms.
5. Installed our new Flex Fuel + Filter + DYME Hose Kit.
6. Installed additional sensors before and after the intercooler bricks so we could get better data when validating our new LT4 1.7L Upgraded Intercooler Bricks.
7. Installed an XDI Goliath HPFP.
8. Installed these Decorative Reservoir Caps.

The only changes made that would have affected HP/TQ was...

1. Changed the camshaft for a BTR Stage.I
2. Freshened our Katech CNC Ported Heads with a proper valve job.

That's it... Same pulleys, similar boost, same ambient temps, same peak timing...
Which is why I was surprised at how much stronger the car felt once we started to do the WOT testing. The car felt like it picked up at least 50rwhp... which is more than I would have expected to make.

Surprisingly, the car ended up making 915rwhp and 850rwhp. That's a bump of 75rwhp and 50rwtq on the same boost, E content and timing.

The goal was simply to make the car more efficient and make more power with the same boost (only 15psi) while blending down to E60. I think it's the perfect combination for a fun street car, while keeping boost low, which makes the car fairly easy to keep cool.

Disclaimer; for those reading this with plans to build your car, I must say clearly... I think 915rwhp 850rwtq is too much for a street car. At this power level the car is dangerous when not pointed straight, and even when you are... conditions must be good in order to stay straight when boost hits. For what it's worth, I think your average driver should aim for the 700-750rwhp mark.

Building mine to 915rwhp was not the goal, simply wanted to see how much power we could make with a 9.2" lower and 2.3" upper on a ported stock blower and Di only fuel system. No meth, no port, no 2650.
Although we could have stayed on the DYNO longer to find more power, we ran out of time, and was happy stopping where we did.

Might test a few other goodies down the road, But for now, she is running good, time to focus attention to a few other pressing items.

I will share an IG or FB link of some of the footage when it's compiled. For now I leave you with the before and after dyno graph...

Cheers to going faster and staying cooler!

Very healthy curve. Nice job!

A lot of people underestimate how good Stage 1 cams are.

[Z OH 6]

Originally Posted by SOCAL.M6.ZLE

PROGRESS UPDATE - DYNO NUMBERS...

OK, Sorry for the delay guys... been super busy with the new GMS Flex Fuel Kits, and some top secret goodies so the remote tuning has been slow.

That said, the tuning felt just about complete so it was time to head to the DYNO to see how much steam she makes now, and fine tune if needed. Although I made a lot of changes to the car while it was down...

1. Installed (for testing) our Stage.II Oil Cooler
2. Upgraded the gauges in our Stage.I Data Control Package to the PRO Versions
3. Installed our Monster Triple S Clutch
4. Installed our Ridetech Coil-Overs with BMR Lower Control Arms.
5. Installed our new Flex Fuel + Filter + DYME Hose Kit.
6. Installed additional sensors before and after the intercooler bricks so we could get better data when validating our new LT4 1.7L Upgraded Intercooler Bricks.
7. Installed an XDI Goliath HPFP.
8. Installed these Decorative Reservoir Caps.

The only changes made that would have affected HP/TQ was...

1. Changed the camshaft for a BTR Stage.I
2. Freshened our Katech CNC Ported Heads with a proper valve job.

That's it... Same pulleys, similar boost, same ambient temps, same peak timing...
Which is why I was surprised at how much stronger the car felt once we started to do the WOT testing. The car felt like it picked up at least 50rwhp... which is more than I would have expected to make.

Surprisingly, the car ended up making 915rwhp and 850rwhp. That's a bump of 75rwhp and 50rwtq on the same boost, E content and timing.

The goal was simply to make the car more efficient and make more power with the same boost (only 15psi) while blending down to E60. I think it's the perfect combination for a fun street car, while keeping boost low, which makes the car fairly easy to keep cool.

Disclaimer; for those reading this with plans to build your car, I must say clearly... I think 915rwhp 850rwtq is too much for a street car. At this power level the car is dangerous when not pointed straight, and even when you are... conditions must be good in order to stay straight when boost hits. For what it's worth, I think your average driver should aim for the 700-750rwhp mark.

Building mine to 915rwhp was not the goal, simply wanted to see how much power we could make with a 9.2" lower and 2.3" upper on a ported stock blower and Di only fuel system. No meth, no port, no 2650.
Although we could have stayed on the DYNO longer to find more power, we ran out of time, and was happy stopping where we did.

Might test a few other goodies down the road, But for now, she is running good, time to focus attention to a few other pressing items.

I will share an IG or FB link of some of the footage when it's compiled. For now I leave you with the before and after dyno graph...

Cheers to going faster and staying cooler!

Great work but all roads lead to the Maggie 2650. Just do it!

[DeuceCam]

Awesome!

How is drivability with the new clutch/flywheel? I'm not a fan of how sluggish the stock dual mass flywheel feels...

[SOCAL.M6.ZLE]

Originally Posted by Joshinator99

Great work! Efficiency definitely pays dividends with great power at very reasonable boost levels.

Thanks buddy... in the name of science... and based on a buddies request, I may go back to the DYNO in a few months after upgraded to some 2" headers, removing the cats and testing out the JLT... just to see if that helps things breath a little easier...

I know there is more power to be made, even at only 15psi.

[SOCAL.M6.ZLE]

Originally Posted by 2023_ZL1-AUTO

AWESOME Bro ! Can't wait to see that beast at Camaro Fest 2026 !!!! Save me a parking space !!! ����

Thanks buddy, will do

[SOCAL.M6.ZLE]

Originally Posted by RobZL1

Nice! Good stuff, Gabe! That is a very healthy mill with the 1.7L at only 15psi in 91deg weather, my friend. You should be very proud. (and still the nicest looking engine bay around)

Thanks buddy... it has been a fun ride so far... and have no plans to up the boost... just wanna find more efficiency gains, and continue to test / improve my cooling systems...

[2023_ZL1-AUTO]

Originally Posted by SOCAL.M6.ZLE

Thanks buddy... it has been a fun ride so far... and have no plans to up the boost... just wanna find more efficiency gains, and continue to test / improve my cooling systems...

and oh yeah... add a Maggie ! hehehe 😉

[SOCAL.M6.ZLE]

Originally Posted by NG329

Very healthy curve. Nice job!

A lot of people underestimate how good Stage 1 cams are.

I agree... bigger is not always better.

[SOCAL.M6.ZLE]

Originally Posted by Z OH 6

Great work but all roads lead to the Maggie 2650. Just do it!

HAHA, I cannot disagree

For now, I still want to find and take advantage of more efficiencies... with the "stock cube" "stock ported blower" "Di Only" "low boost" Set up... We have a new more things to test later this year, that might get us to around 950rwhp +/-

[SOCAL.M6.ZLE]

Originally Posted by DeuceCam

Awesome!

How is drivability with the new clutch/flywheel? I'm not a fan of how sluggish the stock dual mass flywheel feels...

Man... the Monster Triple S paired with the Ultra-Lightweight flywheel is AWESOME. Although it does require a pinch more throttle at take off... the shifting is sooooo smooth. You won't be disappointed!

[SOCAL.M6.ZLE]

In typical fashion... now thinking about changing out my 1-7/8" headers for 2", going catless for the DYNO, testing out a 112mm TB and the JLT for the next round of efficiency searching to see if we can hit 950rwhp in 15psi. Any other low hanging fruit to squeeze out some more efficiency from this set up?

[2023_ZL1-AUTO]

Very interesting! GM should pay your for doing the performance engineering research !!! Sweet deal and for be the front runner on all this testing! !!

[NG329]

Originally Posted by SOCAL.M6.ZLE

In typical fashion... now thinking about changing out my 1-7/8" headers for 2", going catless for the DYNO, testing out a 112mm TB and the JLT for the next round of efficiency searching to see if we can hit 950rwhp in 15psi. Any other low hanging fruit to squeeze out some more efficiency from this set up?

My $0.02.... Your blower is the restriction here. According to Jannetty, my car will hit at or close to 1000whp at 15psi if we add the DI mods (dual in pump tank, Goliath HPFP, and 70 injectors) +tuning. Our builds are pretty close minus cam differences, and I'm running Maggy, 2" ARH, 103TB, JLT.

I'm fundamentally not a fan of OEM blowers past 700whp due to inadequate heat management and restriction. Ported blowers can definitely make the power, but they can't hold the power. On the track, with the Maggy I've done 30 minute sessions without any drop-off in power.

[SOCAL.M6.ZLE]

Originally Posted by NG329

My $0.02.... Your blower is the restriction here. According to Jannetty, my car will hit at or close to 1000whp at 15psi if we add the DI mods (dual in pump tank, Goliath HPFP, and 70 injectors) +tuning. Our builds are pretty close minus cam differences, and I'm running Maggy, 2" ARH, 103TB, JLT.

I'm fundamentally not a fan of OEM blowers past 700whp due to inadequate heat management and restriction. Ported blowers can definitely make the power, but they can't hold the power. On the track, with the Maggy I've done 30 minute sessions without any drop-off in power.

Hey buddy, well said. Vehicle use is paramount. If I was building a road race car and wanted 900rwhp, it would have been with a 2650 for sure. A focused effort is needed to keep a 900rwhp 1.7L cool, even for street use. Clearly we are still within the efficiency range of the 1.7L at 15psi... it's the bricks that are at the limit... which is why I wanted to "turn up the juice" so we could test our new "larger" supercharger bricks.... and BOY do they work!

I believe I am collecting more data from my car than any other 1.7L car, so I can say with confidence the bricks are the final weak link. My original efforts to remove restriction, add volume and add efficiency to the supercharger cooling system all paid dividends, but we quickly made the bricks and the pump the weak link. Evidence by that even after removing all of the restrictions and getting back over 60% more flow... swapping the larger bricks still picked up another 12.5% in GPM coolant flow. We are now moving 800% more fluid nearly 90% faster... and I still think a faster flowing pump will help at WOT.

Additional testing will tell the story on if the blower is now the weak link. I'd like to upgrade to a 2" header, (no cats) test a 112mm TB and a larger JLT intake to see if removing restrictions on either side of the blower will make additional gains while keeping all things equal.

Time will tell!

Cheers to going faster and staying cooler!