Apologies this is a straight copy/paste from my own forum but it may interest some of you.So.. we've finally found the time to get some proper runs on the Accord today, now that we're happy the Dyno software is perfectly setup.
The purpose of the exercise today was not to tweak any software, merely to dyno run the 2 different stages we've been installing on customer cars to demonstrate the power curves and outputs.
Ideally, to be completely scientific we would have wanted to have perfect conditions on the day, clean filters, fuel etc and at least 100 miles run between each map install to ensure the ECU learnt properly.. but we didn't have the time today.
Nevertheless, the results are excellent and we're satisfied that the curves are more or less spot on (and in line with what we expected). The only observation I would make is that towards the end, the power figures have dropped ever so slightly due to engine heat (and we simply didn't have time to wait an hour between runs) but you are talking maybe 1 or 2bhp on the stage 2 (that was run #3 and the engine was pretty hot by then)..
For the more discerning amongst you, you will want to cast your eyes over the power curves and the torque figures to understand how long we manage to sustain the torque curves B) Also note that we have used zero correction factors. Some companies like to use correction to compensate (i'm not saying its a bad thing - we've just chosen to publish clean unmolested figures here). If you were to use for example a 1.04% correction (we've allowed the software to make the calculation for 1.04%) and you can add +5bhp and 9NM to the figures. Even without correction, you should be suitably impressed I would say
The final point to note is that the accuracly of our dyno is demonstrated in power run #1 where the test car (my car) is making almost exactly what Honda said it should make on a stock map. This car is on 96k miles and I think that's just testament to Honda's engineering that it's lost virtually no power in 7 years and 96k miles. It's also important as it demonstrates the true power gains as opposed to looking at gains on a car that is already 7 or 8 bhp up on what should be stock...
Anyway, I'll let the charts do all the talking..
All 3 stages (with EGR ON) plotted here:
And for your viewing pleasure, this is the special Stage 2 with EGR OFF I've been playing with the for the last 4k miles or so (I think I'm keeping)
Cheers for now...
EDIT - I note its hard to see the figures unless you zoom in (or its my eyesight)
Stock Map: 137.4 bhp & 252 lbft (or 151.1 bhp @ crank and 277.2 lbft)
Stage 1: 159.8 bhp & 284 lbft (or 175.8 bhp @ crank and 312.5 lbft)
Stage 2: 170.5 bhp & 299 lbft (or 187.5 bhp @ crank and 328.8 lbft) - note this is a couple of bhp lower than expected but we put it down to heat
Stage 2 with EGR OFF: 174.4 bhp & 308.8 lbft (or 191.8bhp @ crank and 339.7 lbft)
Thinking about it, the other things to note here are that the Pipercross filter probably makes no difference to power (although I need to do a run with stock filter to see) and V Power Diesel probably has no effect on power (but I'll keep using it anyway)..
