Evo "sluggish" when first taking off?
I live in Houston. It's 102 today. My car still needs a little time to warm up in the morning and the car is jittery until it warms up. He's not talking about outside temp he's talking about the temp of your engine & fluids.
This past week it has been in the mid 80s, and even with these temperatures (and no, there is no heat soak) the car is sluggish from a dig.
He said it's the wife's car.
Anyway, the stock rev limiter is 7606rpm, and I don't know what you mean by "fuel cutoff." That's what a rev limiter is - it cuts fuel. The USDM IXs have a built-in 5k stationary rev limiter that keeps you from revving higher from a standstill (a.k.a. launching). However, we raise that up when we get tuned to 6k usually. No, you won't be launching at 7500, but 5500-6000 will be about right.
Anyway, the stock rev limiter is 7606rpm, and I don't know what you mean by "fuel cutoff." That's what a rev limiter is - it cuts fuel. The USDM IXs have a built-in 5k stationary rev limiter that keeps you from revving higher from a standstill (a.k.a. launching). However, we raise that up when we get tuned to 6k usually. No, you won't be launching at 7500, but 5500-6000 will be about right.
(I know you didn't say that)
Newbie
Joined: Aug 2006
Posts: 24
Likes: 0
From: Apex, NC
Boost threshold is your answer. That is the point (rpm) that must be reached before the exhaust contains enough energy to spool up the turbo, and unfortunately that's one category in which our low compression engines just can't match your beast of a Honda.
I really shouldn´t have suggested that "sidestepping" technique. I saw it on a JDM video, and I´m pretty sure that my buddy, JRSimon, launches that way, but I personally would never try it on my own car. And so I really shouldn´t have suggested such a tactic to a Newbie.
The method that Warrtalon mentions is, IMO, the proper method to launch and he is the right guy to advise on the proper launching technique. I really don´t know squat about launching and I should have kept my mouth shut. I guess I´ll have to stop posting late at night.
Sorry!
The method that Warrtalon mentions is, IMO, the proper method to launch and he is the right guy to advise on the proper launching technique. I really don´t know squat about launching and I should have kept my mouth shut. I guess I´ll have to stop posting late at night.
Sorry!
Slip it fast! 
I think you just need to give it some more rpms when taking off. I usually don't have trouble taking off from a stop without launching it. Although that could be due to the tbe letting things get going a little quicker, who knows. I've never driven a stock-exhaust evo. I'd say try to treat it like an underpowered front-wheel drive car for daily driving. That's what it seems like to me anyway. Of course when you get on it, then it's a different story.
I think you just need to give it some more rpms when taking off. I usually don't have trouble taking off from a stop without launching it. Although that could be due to the tbe letting things get going a little quicker, who knows. I've never driven a stock-exhaust evo. I'd say try to treat it like an underpowered front-wheel drive car for daily driving. That's what it seems like to me anyway. Of course when you get on it, then it's a different story.
I think there is more to this than simple turbo lag.
My stock 06 RS does the same thing at 6000 miles.
I don't like to have to pedal the clutch to get a smooth pull out from a dead stop.
At less than 1500 rpm the engine seems to have nothing.
If I sit and gently roll on the throttle, I see my boost gage rise and then fall and then rise again. Really shouldn't do that, should rise with increased throttle until it reaches zero and then go to boost.
I wonder if the MIVEC is changing the timing of the cam as you come off idle.
The other possible causes would be EGR, Vacum leaks, O2 sensor, and fuel or iginition problems.
I have no codes or CEL popping up and it idles fine and runs good at highway speed and above.
I know the EGR hoses are attached but that is the main thing I have checked. A dealer is just going to say it is normal for the car so I doubt they would be any help.
Kinda hoping it gets better or worse soon, very hard to track something like this down.
Anbody who has seen this and found a cause, please chime in.
Thanks
Mitsuatb
My stock 06 RS does the same thing at 6000 miles.
I don't like to have to pedal the clutch to get a smooth pull out from a dead stop.
At less than 1500 rpm the engine seems to have nothing.
If I sit and gently roll on the throttle, I see my boost gage rise and then fall and then rise again. Really shouldn't do that, should rise with increased throttle until it reaches zero and then go to boost.
I wonder if the MIVEC is changing the timing of the cam as you come off idle.
The other possible causes would be EGR, Vacum leaks, O2 sensor, and fuel or iginition problems.
I have no codes or CEL popping up and it idles fine and runs good at highway speed and above.
I know the EGR hoses are attached but that is the main thing I have checked. A dealer is just going to say it is normal for the car so I doubt they would be any help.
Kinda hoping it gets better or worse soon, very hard to track something like this down.
Anbody who has seen this and found a cause, please chime in.
Thanks
Mitsuatb
Evolving Member
Joined: Feb 2007
Posts: 310
Likes: 0
From: Kansas
You might not be use to the All Wheel Drive? I noticed when i first got my evo that it was also sluggish. I was launching way to low in term would just bog. Dont be afraid to give it some RPM my friend :P
Though i'd be very weary pushing it further, atleast w/stock pistons & rods anyway. Do yourself a favor and look into building that block before the head. They're very efficient in stock form, the blocks are what's weak at those power levels. They have a similar design in the H22 engines which don't actually have pressed in sleeves but instead use a MFR (micro-fiber reinforced) coating on the cylinders which the pistons slide on. Earlier on they were said to have no build potential because u couldn't simply bore them out like the B-series blocks that had steel liners, u had to resleeve the whole block $$. The Mahle piston company is the 1st to create a turbo piston that could work w/these blocks without resleeving (Mahle Gold Series Pistons). Research them if u haven't already
Last edited by Tha Shocker!; Aug 21, 2007 at 12:06 AM.
