Horsepower and Torque

[BriG21]

People ask me all the time how much horsepower my car has and I'm not exactly sure. I wanted to start a list of all the common mods with a good estimate of what the HP and torque gains are for each mod. I have a 2013 1.4T with DDMW Intake, budget tune, both TTR mounts, and soon to have ZZP catback exhaust w/muffler. Anyone have good estimated values for my car? opcorn:

 

[cndctrdj]

180 torque at the wheels

 

[rdss]

Do you have a dyno sheet to prove that? Unless someone has put the car on a dyno the only numbers you get at the ECM's estimated flywheel hp/trq.

BriG21, you don't have to guess about your output since you are Trifecta tuned. Take a wot run log and send it to to Sunny with BNR or to Trifecta and they can give you your numbers.

 

[BriG21]

Only have the budget tune for now

 

[Preloader]

Great idea for a thread/discussion.

With all your mods plus exhaust I'd estimate 160-170hp/180-190tq at the wheels.

The single most effective power gain comes from the tune. The second is better flowing exhaust. But there is more to power rating than just peak numbers. That why a dyno graph becomes the most informative.

Example: while a full turbo-back exhaust may gain you 8-12 hp at peak, a big benefit is that it allows your power curve to reach toward your peak power in a shorter amount of time.... The turbo will spool faster, RPMs will climb faster, and you will be in max power range sooner.

I wish I could give a gain number to associate with each mod, but the variables make it difficult without a pre and post mod dyno. Also the numbers would change pre and post tune.

As of now it seems that a 1.4T with ALL the bolt ons (there are only so many) and a full tune is capable of ~180whp/220wtq

I suspect that the third most effective power mod may be charge piping, and would love to see real dyno test data on the subject.

 

[sx sonic]

EDIT: now that I'm at my computer and can post links.

http://www.sonicownersforum.com/forum/general-discussion/8024-sonic-dyno-thread.html
Intake, catback, and a 93 tune looks to be good for ~162hp and 216 ft lbs of torque at the wheels.

 

[ungawd]

My estimate of HP delivered from the crank in my car is ~200 +/- 3. I'm basing this on a real world scenario of chasing a 205HP Cobalt LS, assuming GM's reported HP for that engine is correct. Total vehicle weight was in my favor by ~100 lbs, drag coefficientand aerodynamicswere in his favor. From 0-100 mph I was glued to him with an inconsequential amount of throttle left (Stock intake manifold and injectors). My mods are: full turbo-back exhaust with no cats, premium trifecta tune that is not fully dialed in, DDMWorks intake. Both cars are automatic.

 

[ranvette]

I would say with the budget tune your GM PID Torque appt flywheel numbers would be around 170HP/180LB TQ.This would be based on useing 93 octane fuel.A slightly more aggressive 93 octane tune would put you at 180HP/200LB TQ flywheel.This would be for a completely stock motor with a K&N panel filter.A complete exhaust may add 8 HP and a ported intake will add a solid 10 HP.Running the car on a Dynojet deduct about 12 to 14% HP. Add meth injection or Use E85 and there is still more HP and TQ to be gained

 

[whitnith]

My estimate of HP delivered from the crank in my car is ~200 +/- 3. I'm basing this on a real world scenario of chasing a 205HP Cobalt LS, assuming GM's reported HP for that engine is correct. Total vehicle weight was in my favor by ~100 lbs, drag coefficientand aerodynamicswere in his favor. From 0-100 mph I was glued to him with an inconsequential amount of throttle left (Stock intake manifold and injectors). My mods are: full turbo-back exhaust with no cats, premium trifecta tune that is not fully dialed in, DDMWorks intake. Both cars are automatic.

You were not racing a 205 hp LS, unless it had a turbo or supercharged added...

It was either 145, 148 or 155hp depending on the year.

205hp is for the SS Supercharged models, which aren't automatic.

 

[ShadowRS]

I dunno.... I still don't think a tuned sonic would hang with a well driven SS/SC in a straight line...

 

[ShadowRS]

Also, the 205 was a conservative number if it was the SS/SC. more around 220-230.

 

[whitnith]

Also, the 205 was a conservative number if it was the SS/SC. more around 220-230.

If the car he raced was an automatic, it wasn't a SS/SC. And yes, the car was underrated, so it could race in the class it did.

I dunno.... I still don't think a tuned sonic would hang with a well driven SS/SC in a straight line...

Of course it wouldn't. It's near certain the car he raced was a LS with the 2.2 that has around 150hp, based on year. Or maybe it was a LT with the 2.4 with 170hp.

 

[ranvette]

I look at the 1.4T engine for what it is no race motor.Its designed to have stout low end and mid range power.And the trans gear ratios accent its power band.It gives the driver a good impression of a larger and peppier engine.The engine with the stock tuning feels governed even on 93 octane.Tuned it feels un governed and has nice get ahead power in traffic.Roll into the throttle from red lights and it gets ahead of traffic with ease.On the highway it has great pulling power and does well at higher speeds weaveing in and out of traffic.Its still not a race motor but a lot more fun to drive with 30 or 40 hp and 40 or 50 lb tq added

 

[ungawd]

2005–2007 2.0 L Ecotec LSJ S/C I4 205 hp (153 kW) 200 lb·ft (271 N·m)

The LSJ, didn't mean LS trim. 2005–2007 2.0 L Ecotec LSJ S/C I4 205 hp (153 kW) 200 lb·ft (271 N·m)
It shifted very smoothly so I assumed it was an automatic but it may have been a manual. We were going up a 2-3 degree slope where my torque advantage probably helped.

 

[whitnith]

2005–2007 2.0 L Ecotec LSJ S/C I4 205 hp (153 kW) 200 lb·ft (271 N·m)

The LSJ, didn't mean LS trim. 2005–2007 2.0 L Ecotec LSJ S/C I4 205 hp (153 kW) 200 lb·ft (271 N·m)
It shifted very smoothly so I assumed it was an automatic but it may have been a manual. We were going up a 2-3 degree slope where my torque advantage probably helped.

If it was a LSJ, it was a manual. They weren't available in automatic.

 

[RSWorxs]

Also, the 205 was a conservative number if it was the SS/SC. more around 220-230.

I owned a 07 SS/SC and with the mods of, Stage 2, 2.9 pulley, Headers, downpipe and intake she put down around 245 and 210tq. to the wheels.

 

[SONIC1.4]

I owned a 07 SS/SC and with the mods of, Stage 2, 2.9 pulley, Headers, downpipe and intake she put down around 245 and 210tq. to the wheels.

Cool story bro.

 

[BriG21]

Thanks Preloader. People ask me all the freakin time. At least now I'll have something close to tell them. All I know is it's a lot of fun to drive

 

[cndctrdj]

I dunno.... I still don't think a tuned sonic would hang with a well driven SS/SC in a straight line...

Depends. A well driven cobalt Ss Sc runs low 13's stock pulley. A well driven moded sonic runs high 14's

If you go by the average of each. Cobalt Ss Sc 14.5 sonic tuned 15.3

Toss a pulley on the cobalt and a few cooling mods and your in the 12's

 

[cndctrdj]

And the Ss Sc usually dynoes stock 210 whp