What spark plugs are you guys running 450+RWHP guys.
02-23-2009, 10:49 AM
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What spark plugs are you guys running 450+RWHP guys. I've been running NGK-TR555, and I keep having to replace them. I'm running a bit lean, but haven't ever had problems this bad.
02-23-2009, 02:17 PM
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CARTEK Racing
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TR-55 here...
I don't think your plugs are the problem... clearly if you are saying you are running lean, your tune is the problem.
Why would you want to do a bandaid fix like a colder plug? Why not fix the true issue.. the tuning?
I don't think your plugs are the problem... clearly if you are saying you are running lean, your tune is the problem.
Why would you want to do a bandaid fix like a colder plug? Why not fix the true issue.. the tuning?
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02-23-2009, 07:56 PM
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The tune is good, I actually have been getting some awsome tunes in the mail from a sponser. My fuel injectors are the problem for the leaning. I have 42#'s on their way as well as a tune for them. But I never had a problem before with the plugs untill recently. I think the tr-6 is what was in when I put the 555's in.
Maybe the tr-555 just isn't as forgiving as the TR6 when it comes the the air/fuel ratio?
Maybe the tr-555 just isn't as forgiving as the TR6 when it comes the the air/fuel ratio?
Last edited by 94lt1m6; 02-24-2009 at 10:05 PM.
02-23-2009, 09:55 PM
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On The Tree
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What CR are you running, if on the higher side you will need a TR6 plug. How do you know your tune is good, what is your A/F reading? Mail order tuning is good, but cant beat dyno tuning with a wideband.
02-24-2009, 10:04 PM
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I'm running milled heads, I don't know the specs, but I would say its a good 10.3:1?
02-24-2009, 10:16 PM
#12
I'm having a sputtering issue right now with mine... at the high rpm range...
didn't start till after my 36# Fast injectors were installed...
Guess I need to pull my plugs and check em... just a little scared to... after all the horror stories I hear of people breaking plugs off in the heads... I tried it the other day and pussied out when I couldn't break the first spark plug loose
I'm running an 11.2:1 CR with the mods in my sig pic...
my A/F is right around 12.8-13.0 across the board...
any ideas guys?
didn't start till after my 36# Fast injectors were installed...
Guess I need to pull my plugs and check em... just a little scared to... after all the horror stories I hear of people breaking plugs off in the heads... I tried it the other day and pussied out when I couldn't break the first spark plug loose
I'm running an 11.2:1 CR with the mods in my sig pic...
my A/F is right around 12.8-13.0 across the board...
any ideas guys?
02-24-2009, 10:27 PM
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Were your injectors tuned in? Maybe that, or a bad connection with a plug wire?
Oh BTW you forgot to add one of these to your post
OH also, I just noticed your only 446 HP. My title clearly states 450+!
Oh BTW you forgot to add one of these to your post
OH also, I just noticed your only 446 HP. My title clearly states 450+!
02-25-2009, 09:24 AM
#15
Spark plugs won't cure your problem. I'd say your mail order tune is not quite as good as you think. Or maybe it's something else, but FWIW TR55s should be fine on a car with 10.3-1 compression.
I've been running TR55s without issue for some time now in my 11.x-1 motor.
I've been running TR55s without issue for some time now in my 11.x-1 motor.
02-25-2009, 09:31 AM
#16
Spark plugs won't cure your problem. I'd say your mail order tune is not quite as good as you think. Or maybe it's something else, but FWIW TR55s should be fine on a car with 10.3-1 compression.
I've been running TR55s without issue for some time now in my 11.x-1 motor.
I've been running TR55s without issue for some time now in my 11.x-1 motor.
Vince at Trifecta has a real good system, if you going to mail order tune I would look into it.
02-25-2009, 09:43 AM
#17
Mail order tunes are fine, if you're providing data feedback for them to make adjustments with. So if you're driving around acquiring data to provide to them, and they then make changes based on that data, then in fact it is better than a dyno tune.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
02-25-2009, 10:00 AM
#18
Mail order tunes are fine, if you're providing data feedback for them to make adjustments with. So if you're driving around acquiring data to provide to them, and they then make changes based on that data, then in fact it is better than a dyno tune.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
But as far as the dyno and tuning goes there are a few different types. A load bearing dyno will provide the same part throttle tuning viability as driving it on the streets.
02-25-2009, 10:04 AM
#19
Mail order tunes are fine, if you're providing data feedback for them to make adjustments with. So if you're driving around acquiring data to provide to them, and they then make changes based on that data, then in fact it is better than a dyno tune.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
Dyno tunes are fine for hitting WOT and idle, but to get a true tune, you need to drive it on the street and log multiple different points.
As for the plugs, hp is heat, and the more hp you're making the more heat, so a slightly cooler plug could help, but if you're running too lean, a cooler plug isn't going to cure that.
The dyno comes in handy so that you don't have to scream around the streets at WOT. Cops don't seem to like that.
02-25-2009, 09:38 PM
#20
How in the world are mail order tunes goin to get u anywhere close to a dyno tune or even a street tune?!?!? how are u supposed to data log anything to tell if your cars running lean or right at a certain spot threw the rpm range?