HKS Camshafts-- initial dyno results
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HKS Camshafts-- initial dyno results
Just a quickie. Finally got around to dyno testing 264 intake and 272 exhaust cams on our Stage 1 shop car.
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Last edited by shiv@vishnu; Oct 27, 2003 at 05:07 PM.
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Re: HKS Camshafts-- initial dyno results
Originally posted by shiv@vishnu
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm.
Good results.
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Re: Re: HKS Camshafts-- initial dyno results
Originally posted by Ron
Is this because of the now-higher VE up there?
Good results.
Is this because of the now-higher VE up there?
Good results.
Shiv
A few questions:
- How's the idle?
- why did you choose 264/272 instead of 264/264 or 272/272?
- Would this setup (264/272) pass the idle smog test or can it be tuned to pass w/ the XEDE?
Thanks.
- How's the idle?
- why did you choose 264/272 instead of 264/264 or 272/272?
- Would this setup (264/272) pass the idle smog test or can it be tuned to pass w/ the XEDE?
Thanks.
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Gimme a few days of driving around and I'll let you know. With the 264/272 combo, there is certainly some idle unstability-- much of which I've tuned out with the XEDE. But it's still there. Again, this is with the gears set at 0 and 0 deg. Maybe we'll come across a timing change which will improve idle stability without adversely affecting output. We'll see...
Cheers,
shiv
Cheers,
shiv
Shiv, do you think that the idle and driveability on the stock 16g would have been better with the 264/264 combo. I have page saved from a tuner thattested multiple sets of cams in a 4G63 with a 16G and found no benefits to using the combo. Not to say that the combo wound not work well with a larger turbo, but for those that want the power, but perfect driveability, do you think this would be better. Also, are you going to have off the shelf XFLASH stages to include cams of varying degrees. Sorry for so many questions, but I really trying find the best power and driveability
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Now for the real question. Did it get a CEL?
Originally posted by shiv@vishnu
Gimme a few days of driving around and I'll let you know. With the 264/272 combo, there is certainly some idle unstability-- much of which I've tuned out with the XEDE. But it's still there. Again, this is with the gears set at 0 and 0 deg. Maybe we'll come across a timing change which will improve idle stability without adversely affecting output. We'll see...
Cheers,
shiv
Gimme a few days of driving around and I'll let you know. With the 264/272 combo, there is certainly some idle unstability-- much of which I've tuned out with the XEDE. But it's still there. Again, this is with the gears set at 0 and 0 deg. Maybe we'll come across a timing change which will improve idle stability without adversely affecting output. We'll see...
Cheers,
shiv
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Re: HKS Camshafts-- initial dyno results
When it's done let me know what you make on 100 oct!
Originally posted by shiv@vishnu
Just a quickie. Finally got around to dyno testing 264 intake and 272 exhaust cams on our Stage 1 shop car.
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Just a quickie. Finally got around to dyno testing 264 intake and 272 exhaust cams on our Stage 1 shop car.
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Re: HKS Camshafts-- initial dyno results
Originally posted by shiv@vishnu
Just a quickie. Finally got around to dyno testing 264 intake and 272 exhaust cams on our Stage 1 shop car.
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Just a quickie. Finally got around to dyno testing 264 intake and 272 exhaust cams on our Stage 1 shop car.
Within 20 runs of XEDE tuning, we gained nearly 30 wheel hp over the stock cams. More importantly, the gains were at all on-boost engine speeds, from 4000rpm to redline. And we haven't even begun to play around with cam timing changes through the adj cam gears (which are currently set at 0 and 0 deg). This is on 91 octane, of course.
It's interesting to note that I had to pull substantial amounts of spark advance at higher rpm. Fuel map tweaks, oddly enough, were relatively minimal.
Tomorrow, I'll play with cam timing and see how much more can be squeezed out of it. But as its stands, Stage 1+ should be worth ~270whp at our shop (DD dyno and running 91 octane) or 340-355whp on an AWD Dynojet running 93 octane. And, of course, more on a 2wd Dynojet. And even more without a cat, running race gas.
More testing to come this week...
Cheers,
shiv
Eric
Yes. I guess we'll see you back at BM Tranny for a spring tuning session. 350 whp, plus a radical sounding idle. I must have them. The guy running the 272's at BM Tranny had the meanest sounding 4 cylinder I've heard.