TVS 2300 Heartbeart with 2015 SS 1LE - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

grunow · 04-20-2026, 10:33 AM

good morning all,
long time reader and now first time posting!
looking for some input and opinions on what i could do next for upgrades to push more power.
long story short i bought the car with the modications. 1 7/8" long tube headers, racing cam, upgraded fuel injection, Magnuson TVS 2300 Heartbeat supercharger.
i was told the car is around that 700WHP range but i have never dyno'd to confirm this.
either way im looking at options to increase the horsepower. intial thougths are smaller pulleys to squeeze more power along with re tune and dyno.

but essentially looking for some suggestions.

thanks in advance.

1JEWLDSSRS · 04-20-2026, 11:22 AM

Smaller pulley will get you some, but doing a flex fuel mod and a tune to run E85 will get you a lot more, but then you would have to upgrade your fuel pump and go with bigger injectors, or you could just do the pulley and meth injection to cool down the IAT's and a dyno tune for that, and get some good gains. From what I have read on this forum. Look through this section, and ask.

https://www.camaro5.com/forums/forumdisplay.php?f=74

grunow · 04-20-2026, 11:28 AM

much appreaciated. im up in Canada and E 85 pumps are no where to be found around here.
might do some more looking into the pulleys and meth injection.

1JEWLDSSRS · 04-20-2026, 11:35 AM

Quote:

Originally Posted by grunow

much appreaciated. im up in Canada and E 85 pumps are no where to be found around here.
might do some more looking into the pulleys and meth injection.

Wow, no E85. But yeah, then the pulley and meth would be the way to go. And a good 93 octane tune, or 91, whichever you have. 93 would be better.

grunow · 04-20-2026, 11:48 AM

tell me about it, it would even be a challenge to find 93 up here near me which isnt ideal...

CamaroCracka · 04-21-2026, 08:42 AM

Do you know what fuel system you are running? Increasing boost will bring more power but will also need more fuel. A ZL1 pump is good for about 650whp, but some push 700 with one. If you can get more power spinning faster (depending on your cam) you will run out of injector quickly because your window to spray fuel becomes smaller and duty cycle climbs toward 100%

grunow · 04-21-2026, 09:12 AM

hmmm ill have to check the paper work on it. the owner gave me some of the paper work from the work he did, but the car is in storage right now with it so ill have it check it all out once the snow finally melts here

FASTFATBOY · 04-21-2026, 10:17 AM

I doubt it's making 700 wheel, even with a pulley on the blower it's probably around 660 wheel.

Mine has that setup but just the blwer and headers on 93 gas, it makes 550 wheel STD on a dynojet.

With the smallest pulley I can put on it will put me at 600 wheel with injectors which is the limit of the ZL1 pump we have.

You have a cam which would put you around 660 wheel depending on the cam..

grunow · 04-21-2026, 12:11 PM

yes i had my doubts as well, but i figured it was a good starting point already with only a few additions to make it even more fun!
i found a dyno sheet before it was tuned and it was around that 570 WHP (i take that with a grain of salt even)i knew i was going to run a dyno just to confrim the actual number but at this point i think i will do a few mods before getting that all done so i know for sure.

04-20-2026, 10:33 AM	#1
grunow Drives: Black 2014 ZL1 Camaro Join Date: Jun 2012 Location: Saskatoon, SK Posts: 26 View My Garage	TVS 2300 Heartbeart with 2015 SS 1LE good morning all, long time reader and now first time posting! looking for some input and opinions on what i could do next for upgrades to push more power. long story short i bought the car with the modications. 1 7/8" long tube headers, racing cam, upgraded fuel injection, Magnuson TVS 2300 Heartbeat supercharger. i was told the car is around that 700WHP range but i have never dyno'd to confirm this. either way im looking at options to increase the horsepower. intial thougths are smaller pulleys to squeeze more power along with re tune and dyno. but essentially looking for some suggestions. thanks in advance.

04-20-2026, 11:22 AM	#2
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 14,555	Smaller pulley will get you some, but doing a flex fuel mod and a tune to run E85 will get you a lot more, but then you would have to upgrade your fuel pump and go with bigger injectors, or you could just do the pulley and meth injection to cool down the IAT's and a dyno tune for that, and get some good gains. From what I have read on this forum. Look through this section, and ask. https://www.camaro5.com/forums/forumdisplay.php?f=74 __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

04-21-2026, 08:42 AM	#6
CamaroCracka Drives: 2010 Turbo LS3 Join Date: Dec 2009 Location: Palm Bay, FL Posts: 3,065	Do you know what fuel system you are running? Increasing boost will bring more power but will also need more fuel. A ZL1 pump is good for about 650whp, but some push 700 with one. If you can get more power spinning faster (depending on your cam) you will run out of injector quickly because your window to spray fuel becomes smaller and duty cycle climbs toward 100% __________________ 2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes. 2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes.

04-21-2026, 10:17 AM	#8
FASTFATBOY Drives: 2013 ZL1 Join Date: Nov 2018 Location: Mobile Al Posts: 568	I doubt it's making 700 wheel, even with a pulley on the blower it's probably around 660 wheel. Mine has that setup but just the blwer and headers on 93 gas, it makes 550 wheel STD on a dynojet. With the smallest pulley I can put on it will put me at 600 wheel with injectors which is the limit of the ZL1 pump we have. You have a cam which would put you around 660 wheel depending on the cam.. __________________ 2015 1SS 1LE, Magnuson 2300 Heartbeat and headers. 550rwhp STD, 535 SAE.

04-20-2026, 11:28 AM	#3
grunow Drives: Black 2014 ZL1 Camaro Join Date: Jun 2012 Location: Saskatoon, SK Posts: 26 View My Garage	much appreaciated. im up in Canada and E 85 pumps are no where to be found around here. might do some more looking into the pulleys and meth injection.

04-20-2026, 11:48 AM	#5
grunow Drives: Black 2014 ZL1 Camaro Join Date: Jun 2012 Location: Saskatoon, SK Posts: 26 View My Garage	tell me about it, it would even be a challenge to find 93 up here near me which isnt ideal...

04-21-2026, 09:12 AM	#7
grunow Drives: Black 2014 ZL1 Camaro Join Date: Jun 2012 Location: Saskatoon, SK Posts: 26 View My Garage	hmmm ill have to check the paper work on it. the owner gave me some of the paper work from the work he did, but the car is in storage right now with it so ill have it check it all out once the snow finally melts here

04-21-2026, 12:11 PM	#9
grunow Drives: Black 2014 ZL1 Camaro Join Date: Jun 2012 Location: Saskatoon, SK Posts: 26 View My Garage	yes i had my doubts as well, but i figured it was a good starting point already with only a few additions to make it even more fun! i found a dyno sheet before it was tuned and it was around that 570 WHP (i take that with a grain of salt even)i knew i was going to run a dyno just to confrim the actual number but at this point i think i will do a few mods before getting that all done so i know for sure.