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Old 07-17-2019, 11:36 AM   #29
V8RWD
 
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So no intercooler.... that is interesting. Any heat issues?
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Old 07-17-2019, 12:21 PM   #30
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Yes there are intercoolers, two large bricks on each side and heat exchanger (LTR) up front as the 2300 Heartbeat has.
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Old 07-17-2019, 01:39 PM   #31
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Originally Posted by KingLT1 View Post
I just don't care for the torque that it gives up for a street car. Sure at WOT above 5k rpm it definitely makes more steam, but when you are part throttle torqueing the engine through the gears I don't see an advantage here. Midrange is very important imo for a street car. If only this unit was keeping the torque up around 570 avg while still pulling 600whp.

Sorry for my delay and not providing this plot initially, the 2650 make more torque everywhere on the base LT1 than the TVS2300 did, as you know, every dyno is different so here are all 3 runs on the same dyno plotted together.

Stock Camaro LT1 (417 RWHP)
TVS2300 Camaro LT1 with Magnuson CARB Cal (553 RWHP)
TVS2650 Camaro LT1 with CARB Proposed Cal (600 RWHP)

As you can see it gives a nice torque benefit across the range and then keeps pulling up top.

Name:  All Runs TVS Camaro.png
Views: 225
Size:  79.0 KB

Now there is no question that the 2300 is a great performer and lower cost solution than the 2650, but in this scenario (street driven pump gas car), the 2650 doesn't give up anything down low and still has a much higher peak power capability.
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Old 07-17-2019, 01:56 PM   #32
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King and I are ok. Little bantering back and forth is ok and we always make up in the morning. Haha.
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Big Gulp by Roto-Fab, Livernois, Manley, Lt4 Fueling, VP Race Fuel, Speed Engineering, Tuned by toohighpsi.
9.65@143 (best MPH 145) w/1.47 60ft 6.25@114 1/8 Employee/Driver
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Old 07-17-2019, 01:58 PM   #33
radz28
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King and I are ok. Little bantering back and forth is ok and we always make up in the morning. Haha.
Fair enough. I respectfully pull-back and let you guys do what you guys do, HAHAHA.
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Old 07-17-2019, 02:08 PM   #34
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Quote:
Originally Posted by toohighpsi View Post
Sorry for my delay and not providing this plot initially, the 2650 make more torque everywhere on the base LT1 than the TVS2300 did, as you know, every dyno is different so here are all 3 runs on the same dyno plotted together.

Stock Camaro LT1 (417 RWHP)
TVS2300 Camaro LT1 with Magnuson CARB Cal (553 RWHP)
TVS2650 Camaro LT1 with CARB Proposed Cal (600 RWHP)

As you can see it gives a nice torque benefit across the range and then keeps pulling up top.

Attachment 996315

Now there is no question that the 2300 is a great performer and lower cost solution than the 2650, but in this scenario (street driven pump gas car), the 2650 doesn't give up anything down low and still has a much higher peak power capability.


Mike, Thanks for posting that. Paints a much clearer picture. The torque looks low on both units. So I am not sure if that is Dyno or tuning related but none the less it at least shows the 2650 gives up nothing down low and nets a much stronger top end. In that case it's a win win.
Just curious if they both were dyno'd at the same boost level?



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Originally Posted by radz28 View Post
And you are also coming across argumentative and hostile. Some people have preferences others don't. The topic is the 2650 install. There was and is not a lot of information to compare to. Frankly - the way you came into this thread seemed more confrontational than anything. Maybe I'm wrong, but it looks like you and laynlo15 have history already, which is what let me to these possibilities. If that's what it is, stay closer to topic.


Not Hostile at all. Laynlo and I are cool... No issues at all. I have been a fan of the Magnuson stuff from day 1.
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Last edited by KingLT1; 07-17-2019 at 03:58 PM.
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Old 07-17-2019, 05:23 PM   #35
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Originally Posted by KingLT1 View Post
Mike, Thanks for posting that. Paints a much clearer picture. The torque looks low on both units. So I am not sure if that is Dyno or tuning related but none the less it at least shows the 2650 gives up nothing down low and nets a much stronger top end. In that case it's a win win.
Just curious if they both were dyno'd at the same boost level?
Its the dyno here, and has always been like that, its a mustang 250 piece with a Superflow controller that has fantastic repeatably and good power numbers up top, but never gives a high low speed torque like some of the other brands.

No, not the same boost level, both tunes are done to achieve the highest possible power on 91 octane pump fuel. The boost pressure that made the highest power level on the TVS2300 was about 7.2 psi. With the TVS2650 we are able to run about 8.5 psi and still hold close to 20 degrees of timing - which is the magic point on these engines.

If you're below about 16 degrees you're running too much boost, you'll make more power by lowering boost and increasing timing and vice versa, if you're getting up to 22 degrees, and you have enough fuel, power is yours by adding boost and lowering timing. While there's a bit more to it than just that to make big power on these DI engines, that's a good rule of
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Old 07-22-2019, 09:29 AM   #36
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Quote:
Originally Posted by toohighpsi View Post
Its the dyno here, and has always been like that, its a mustang 250 piece with a Superflow controller that has fantastic repeatably and good power numbers up top, but never gives a high low speed torque like some of the other brands.

No, not the same boost level, both tunes are done to achieve the highest possible power on 91 octane pump fuel. The boost pressure that made the highest power level on the TVS2300 was about 7.2 psi. With the TVS2650 we are able to run about 8.5 psi and still hold close to 20 degrees of timing - which is the magic point on these engines.

If you're below about 16 degrees you're running too much boost, you'll make more power by lowering boost and increasing timing and vice versa, if you're getting up to 22 degrees, and you have enough fuel, power is yours by adding boost and lowering timing. While there's a bit more to it than just that to make big power on these DI engines, that's a good rule of
I was going to ask the same question then see this answer, Great Job Mike.

Looking forward to the differences we see from the LT4 Blower to this one.

Ted.
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