Drove it all last summer without an issue.
What could I have wrong that would f*ck sh*t up?
MONTE CARLO "COPO" Monte Carlo SS - Turbosaurus Build (Swinging Dick Racing's c*ck got bent... she bounced a little too high & hard, & came down awkwardly)
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Drove it all last summer without an issue.
What could I have wrong that would f*ck sh*t up?
A quick test of the effect of the meth is to make a couple street hits at low boost to see what happens to the IAT reading, then pull the fuse for the meth pump, again low boost. If the IAT's climb much more quickly without the meth then you know the effect. Then tune from there. Also keep track of the AFR at the same time.
My kid's setup has the IAT sensor in an intake runner, which is not ideal for heat soak but extremely effective for monitoring intake temps because the meth is no longer in liquid form by the time it gets to the sensor, and I can watch the difference in IAT reading as the meth comes on. He has a Snow stage 2 kit that is easily turned off. He runs pump gas only and the meth pump is critical at 14-18 psi. I agree with you that it should be fully vaporized because you're shooting it in there pre-turbo. There are a couple of cheater methods to that as well when at the track. Mix your own meth solution - 80/20 or straight M1 in the tank. Albeight somewhat dangerous if you have a backfire because the M1 is flammable, even at 80/20 mix with water, but that sh*t doesn't care about intake temps.
My setup has the sensor too close to the meth injector so I don't see a big decrease in temps, but I know it's there because the Holley cuts fuel from being too rich with the added methanol.
I agree 110%. As long as Mike was able to grab some data from a single pass, then at least he has a starting point. For the love of god, I've been at this for two years and am still finding crap in my system and tune that needs to be addressed. Us hobby drag guys have to learn like this to make improvements IMO. It's easy to fall into the YouTube mentality of 'that look's easy, I can do that' and then wonder why we couldn't make it happen in a week or two.
Live and learn EVERYDAY.
I took a few minutes today to write an updated tune with revised VE, PE and IAT timing retard tables. Tossed the full meth back at it too. I can report the car is just silly to drive. But, hitting a fuel cut rev limiter is not cool. The problem is that adding duty cycle to the controller isn't making any gains in boost/air flow. I am at 90% now.
I suppose this means that I need to increase the base spring pressure to compensate. Oh darn.
Guess we do that, add a rear fire wall, and take it back in a few weeks for round two.
I suppose this means that I need to increase the base spring pressure to compensate. Oh darn.
Guess we do that, add a rear fire wall, and take it back in a few weeks for round two.
Hmmmm, made some prairie test hits??
(Hehe)
Glad to see you’re getting it dialed. How much more fuel pressure can you add? What injector?
(Hehe)
Glad to see you’re getting it dialed. How much more fuel pressure can you add? What injector?
It was just a functionality test of the brakes, which seem fine. Maybe the brake switch is pooched? But, I did take the data from a few quick hits (off the rev limiter) and worked it into a new tune for when I get back from traveling.
The injectors are Deka 80s at 43.5psi base pressure. I can push them up to 58psi base if necessary. They are currently at 46% IDC so plenty of head room with the water/meth supplementing.
I imagine I'd have already run a good number on Friday. But, now we're just going to pump it up.
I'll see what I can do about getting better stoppers on this thing and a proper 30" tall tire before the end of the season.
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I take it that the 'fuel cut rev limiter' is a rev limiter that cuts fuel to limit rpm's? I think I misunderstood you previous comment if so. That sounds like an HP Tuners term.
I figured you had went out to a neighboring town, that you're not running for political office in', and did some 0 to 100 hits. Thinking being 'to hell with these people, I don't need their vote' haha.
I figured you had went out to a neighboring town, that you're not running for political office in', and did some 0 to 100 hits. Thinking being 'to hell with these people, I don't need their vote' haha.
I've done a bunch of reading about DA in the past 36 hours after reading one of your previous posts. WOW, what a difference does your altitude make!
My take after reading up on this is that excessive DA makes a smaller turbo seem larger or larger turbo seem a lot larger. Personally, I'm not a fan of a GT45 because of the specs. but it might be a waaaay better option at your altitude. I'm thinking that the exhaust flow doesn't care about DA, but the compressor does. So the 'small-ish' compressor should be much more effective and not become the restriction because of the air flow. Maybe I'm thinking about this incorrectly - correct me if I'm wrong. But it seems that a larger compressor will be less effective due to the DA at your altitude.
Duke (Northernregal) you're going to need some tricks to light off the S488 at your elevation haha.
I've never thought about this. GroceryGetter83 is at 6' elevation in Bradenton, I'm at 900' elevation locally, and Duke and motorheadmike are at 2800' (like wtf - 2800????!). After doing some basic calcs, like wtf - is my thinking about this correct?
My take after reading up on this is that excessive DA makes a smaller turbo seem larger or larger turbo seem a lot larger. Personally, I'm not a fan of a GT45 because of the specs. but it might be a waaaay better option at your altitude. I'm thinking that the exhaust flow doesn't care about DA, but the compressor does. So the 'small-ish' compressor should be much more effective and not become the restriction because of the air flow. Maybe I'm thinking about this incorrectly - correct me if I'm wrong. But it seems that a larger compressor will be less effective due to the DA at your altitude.
Duke (Northernregal) you're going to need some tricks to light off the S488 at your elevation haha.
I've never thought about this. GroceryGetter83 is at 6' elevation in Bradenton, I'm at 900' elevation locally, and Duke and motorheadmike are at 2800' (like wtf - 2800????!). After doing some basic calcs, like wtf - is my thinking about this correct?
Chris needs the Florida advantage for the more door. Lol.
I have made a plan for it, and that plan is Nitrous!
NITROUS - The Savior!
I'm considering it lol. I'm at 20 psi in 1.2 seconds, but how much better (faster) would .8 seonds be?
I'm considering it lol. I'm at 20 psi in 1.2 seconds, but how much better (faster) would .8 seonds be?
It's not always just for spool. Nitrous in boost compounds benefits, a 50hp dry shot usually adds double or more on the top due to increased charge density. You can also also do a wet shot with meth for improved atomization and cooling. That's the angle I'm considering for later on stage 2, a 50hp dry and a 50hp wet meth after the IC. Stage 1 for the line and stage 2 for the 100 foot with a meth kick.
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