Performance Theoretical performance figures

Pottsy · 8th October 2006, 19:53

A while ago I used a performance analysis program to look at the 1.8 and 2.2 cars, and was asked to include the 1.4.

So here they are (I started from scratch, using some new, more accurate data). The 2.2 power curves have come from the superchips dyno, where "2.2 GRAPH" is standard and "2.2 GRAPH CHIP" is chipped. The software is much better at producing the power curve for petrol engines, so the results should be fairly accurate.

As before though, it's all theory!

perf1.gif

perf2.gif

perf3.gif

perf4.gif

perf5.gif

perf6.gif

perf7.gif

IWANTACIVIC · 11th October 2006, 02:59

Wow look at the cdti g's well sweet , good job pottsy have u dynoed your car to see what your car kickes out of is it your car the 2,2 chipped

Pottsy · 11th October 2006, 08:49

No, I haven't had mine on the dyno yet, I just used the figures from the Superchips before/after dyno chart.

I'll try and get it done soon.

P.

PS Notice that below 50 in fifth all the petrol cars are pulling more G's - the diesel does well but it is over a reduced rev range.

Nick7 · 11th October 2006, 08:50

It's not fair to compare accelerations in same gear between turbodiesel/petrol car.
With turbodiesel you have max torque at 2000rpm, while with petrol at 4000+rpm. Also, petrol does have noticable peak of power at some 6000rpm, whilst diesel has almost full power also at close to 2000rpm.
What I mean... in petrol to accelerate properly you need to downshift, while in diesel torque does it's job. It's just two completelly different ways of driving a car

Pottsy · 11th October 2006, 08:56

Nick, agreed, but the graph is titled "flexibility" so is just showing what happens if you lazily press the throttle without bothering to change down. At the top end of the graph where both engines are revving away, the acceleration is similar.

Pottsy · 14th October 2006, 13:53

Thanks to Thomas's dyno chart here:
Anyone dynoed their Civic 1.8?

I have re-done the calculations using the measured power output for the 1.8. I've also added flat-out acceleration graphs in addition to the engine flexibility graph.

perf1.gif

perf2.gif

perf3.gif

perf4.gif

perf5.gif

perf6.gif

perf8.gif

IWANTACIVIC · 23rd December 2006, 06:00

good update pottsy , have you or the chap that remaped to 185 been on a rolling road yet ? are these figuers for the remap right or pie in the sky ?

Pottsy · 23rd December 2006, 08:01

I haven't been on a RR yet - need to find one nearby! The figures come from Superchips own rolling road, so not pie in the sky but possibly pie at arms length.

8th October 2006, 19:53	#1 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,090 Thanks: 18 Thanked 111 Times in 64 Posts iTrader: (0)	Theoretical performance figures A while ago I used a performance analysis program to look at the 1.8 and 2.2 cars, and was asked to include the 1.4. So here they are (I started from scratch, using some new, more accurate data). The 2.2 power curves have come from the superchips dyno, where "2.2 GRAPH" is standard and "2.2 GRAPH CHIP" is chipped. The software is much better at producing the power curve for petrol engines, so the results should be fairly accurate. As before though, it's all theory! perf1.gif perf2.gif perf3.gif perf4.gif perf5.gif perf6.gif perf7.gif

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This thread is about: Theoretical performance figures, it's in Engines and Transmission at the Honda Civic forum Civinfo; A while ago I used a performance analysis program to look at the 1.8 and 2.2 cars, and was asked to include the 1.4. So ...

11th October 2006, 02:59	#2 (permalink)
IWANTACIVIC Supporter Magic Rear Seat Join Date: 16th September 2006 Location: LINCS UK Posts: 658 Thanks: 0 Thanked 0 Times in 0 Posts iTrader: (0)	Wow look at the cdti g's well sweet , good job pottsy have u dynoed your car to see what your car kickes out of is it your car the 2,2 chipped

11th October 2006, 08:49	#3 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,090 Thanks: 18 Thanked 111 Times in 64 Posts iTrader: (0)	No, I haven't had mine on the dyno yet, I just used the figures from the Superchips before/after dyno chart. I'll try and get it done soon. P. PS Notice that below 50 in fifth all the petrol cars are pulling more G's - the diesel does well but it is over a reduced rev range.

11th October 2006, 08:50	#4 (permalink)
Nick7 Supporter Triangular Exhaust Join Date: 10th August 2006 Location: Croatia Posts: 451 Thanks: 0 Thanked 1 Time in 1 Post iTrader: (0)	It's not fair to compare accelerations in same gear between turbodiesel/petrol car. With turbodiesel you have max torque at 2000rpm, while with petrol at 4000+rpm. Also, petrol does have noticable peak of power at some 6000rpm, whilst diesel has almost full power also at close to 2000rpm. What I mean... in petrol to accelerate properly you need to downshift, while in diesel torque does it's job. It's just two completelly different ways of driving a car

11th October 2006, 08:56	#5 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,090 Thanks: 18 Thanked 111 Times in 64 Posts iTrader: (0)	Nick, agreed, but the graph is titled "flexibility" so is just showing what happens if you lazily press the throttle without bothering to change down. At the top end of the graph where both engines are revving away, the acceleration is similar.

14th October 2006, 13:53	#6 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,090 Thanks: 18 Thanked 111 Times in 64 Posts iTrader: (0)	Thanks to Thomas's dyno chart here: Anyone dynoed their Civic 1.8? I have re-done the calculations using the measured power output for the 1.8. I've also added flat-out acceleration graphs in addition to the engine flexibility graph. perf1.gif perf2.gif perf3.gif perf4.gif perf5.gif perf6.gif perf8.gif

23rd December 2006, 06:00	#7 (permalink)
IWANTACIVIC Supporter Magic Rear Seat Join Date: 16th September 2006 Location: LINCS UK Posts: 658 Thanks: 0 Thanked 0 Times in 0 Posts iTrader: (0)	good update pottsy , have you or the chap that remaped to 185 been on a rolling road yet ? are these figuers for the remap right or pie in the sky ?

23rd December 2006, 08:01	#8 (permalink)
Pottsy Administrator Civinfo master Join Date: 10th April 2006 Location: Leics Posts: 5,090 Thanks: 18 Thanked 111 Times in 64 Posts iTrader: (0)	I haven't been on a RR yet - need to find one nearby! The figures come from Superchips own rolling road, so not pie in the sky but possibly pie at arms length.