How much horsepower do you gain when adding ignition timing?

all right this one should be pretty quick and easy this is a g8 with an air intake set of headers and the mufflers have been deleted other than that it's all stock has just shy of 130,000 miles just gonna start with all of the fueling and everything's been dialed in started another just kind of test calibration file for this zeroed out all of the ignition Corrections so we're just going to start with the factory timing values and then bump them up to degrees at a time and just see what it does for the horsepower and torque and just just kind of see how that all works out so let's let's start now here's the factory ignition table GM does their spark in cylinder air mass which is stupid but we're basically running in between here which the timings in the low 20s however they have a bunch of dumb going on in some of the background tables so when you actually log it it's making 18 degrees of timing throughout a majority of the run so I'm just going to flatline the table at 18 and make the first run and then we'll start adding from there and again I'm going to zero out all the modifier tables just so we get what we're actually commanding and so from 3,600 rpm and out smooth it a little bit but we basically have 18 we have some lower values below that I don't want to just hammer the thing down low with a bunch of timing you don't have to roll into the throttle on the dyno being that it's an auto so we'll basically look at anything you know 36 3800 rpm and above let's make the fish friend probably be beneficial if I actually upload the file with any timing so we'll start with that [Music] alright that was pretty much a flat 18 degrees I'm gonna look in the log verify make sure that that is what it obviously was and then I'm just gonna bump up everywhere it's 18 degrees right now on the table bump it up to 20 and make another run I guess just a little disclaimer that this isn't how I would shape the timing curve or do the timing curve you know that's not how it's gonna leave here there won't be quite so flat but that's not the purpose of this video it's just to show what the time he does to the graph so let's try 20 degrees yep 18 degrees on the dot last time here's 20 moving the cursor around you can see the time is just staying right at 20 so now I try to get with 22 [Music] all right you can see what the difference is was 18 Reds 20 yellows 22 sometimes they get a little squirrely at the end that coming up all right let's try 24 [Music] I rolled into the Prado a little earlier down here so ignore that by about 4000 everything was about the same that so again you can see that the 24 is the green I'll just scroll through and you can look at the numbers I'm gonna try one more at 26 degrees all the way across and then we'll probably call it quits there and kind of take a look at everything [Music] all right here is basically the results I hope they can see it off and then the white is a 26 that was just 26 degrees that we just did so there's a little bit of a gain but not a whole lot I'm not going any higher than that all right well clear torque off here just makes a little easier to see but uh basically 18 degrees is roughly where the factory computer was at and then you can see the gains between 18 and 20 in 20 and 24 relatively similar and then 26 was slightly higher but the gains are so much smaller that I'm not gonna go to 28 but I bet if I went to 28 it would make either the same as 26 or the knock sensor to start going crazy and it would just wouldn't even allow it to run the full 28 so that's that's what timing does alright so that uh give you a little bit of an idea of what you can expect to see you by bumping some timing in I see some guys to try and swing the timing 510 degrees at a time I see other guys swinging it half a degree at a time different power levels different scenarios some cars you know or built well other ones you're horrified to be around it to make a pole let alone throw timing at it and then this was a I remember what this thing make 300 horsepower it's something like that so usually the gains aren't quite as much we had a car on here yesterday in the 1500 ish force power range and one degree of timing was 100 hundred fifty horsepower on that one so you know each car is gonna be different different gas different air flow there's all kinds of stuff so you can't just take a certain timing value that works on one car and assume it's gonna be the perfect amount for the other one so I don't know stuff like this is pretty fun so we'll try and next time I have a car that I can spend a little bit time like this on maybe we'll try and do the same thing with air fuel ratio or you know whatever else so there's anything else you want to see let me know and we'll try to make a video for it thanks [Music] you

Channel: Joe Simpson

Views: 6,879

Rating: 4.9771428 out of 5

Keywords: timing, ignition timing, g8, pontiac g8, hp tuners, tuning, dyno tuning, dyno, hub dyno, horsepower, drag racing, racecar

Id: kRdHfMgkCwk

Length: 9min 59sec (599 seconds)

Published: Sat Apr 25 2020