Evo "sluggish" when first taking off?
Aug 12, 2007, 08:28 PM
#33
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Thanks for the props! 
Well, it hasn't been fully tuned because there was an issue controlling boost. At 13psi it made 472rwhp and 335ft-lbs @ 7400 RPMs. The engine can go to 8500 RPMs so long as the boost is kept under 13psi (bone stock engine). With another 1100 RPMs of tuning left, it should make at least 525rwhp @ 13psi.
Well, it hasn't been fully tuned because there was an issue controlling boost. At 13psi it made 472rwhp and 335ft-lbs @ 7400 RPMs. The engine can go to 8500 RPMs so long as the boost is kept under 13psi (bone stock engine). With another 1100 RPMs of tuning left, it should make at least 525rwhp @ 13psi.
Aug 12, 2007, 08:29 PM
#34
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You need to get a tune and pronto! The Evo's factory fuel table is pig rich, to the point where the car tends to bog. Maybe this is contributing to your problem. Also, try shortening the WGA rod a couple turns, because if there is insufficient preload the spoolup is kinda doggie.
Aug 12, 2007, 08:30 PM
#35
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You need to get a tune and pronto! The Evo's factory fuel table is pig rich, to the point where the car tends to bog. Maybe this is contributing to your problem. Also, try shortening the WGA rod a couple turns, for if there is insufficient preload the spoolup is kinda doggie.
What is this "WGA rod"?
Aug 12, 2007, 08:41 PM
#36
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quick question....well first....SICK SICK SICK s2k. I had to take my laptopn to the bathroom with me while looking at that pic lol jp jp jp. But for real....what made you want an eov when you have 500hp in that car? just another poject?
Aug 12, 2007, 08:44 PM
#37
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WGA=waste gate actuator.
There is a threaded adjustable rod which connects your turbo's integral wastegate puck(flapper valve) to the wastegate actuator. The actuator is located on a bracket mounted to the compressor housing.
You can improve spoolup and consequently increase lowend and midrange boost and ultimately HP and torque by tinkering with the preload tension on the wastegate. It usually comes set from the factory at 11 PSI. If you increase it to 15-17 PSI, things will happen sooner.
There is a threaded adjustable rod which connects your turbo's integral wastegate puck(flapper valve) to the wastegate actuator. The actuator is located on a bracket mounted to the compressor housing.
You can improve spoolup and consequently increase lowend and midrange boost and ultimately HP and torque by tinkering with the preload tension on the wastegate. It usually comes set from the factory at 11 PSI. If you increase it to 15-17 PSI, things will happen sooner.
Aug 12, 2007, 08:47 PM
#38
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dude i hear ya.what im saying is even when its warm out...(like in NY right now) if you drive right off immediatly after turning it over...sometimes you get some hestation till its a bit warm
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.
Aug 12, 2007, 08:47 PM
#39
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.
Aug 12, 2007, 08:53 PM
#41
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WGA=waste gate actuator.
There is a threaded adjustable rod which connects your turbo's integral wastegate puck(flapper valve) to the wastegate actuator. The actuator is located on a bracket mounted to the compressor housing.
You can improve spoolup and consequently increase lowend and midrange boost and ultimately HP and torque by tinkering with the preload tension on the wastegate. It usually comes set from the factory at 11 PSI. If you increase it to 15-17 PSI, things will happen sooner.
There is a threaded adjustable rod which connects your turbo's integral wastegate puck(flapper valve) to the wastegate actuator. The actuator is located on a bracket mounted to the compressor housing.
You can improve spoolup and consequently increase lowend and midrange boost and ultimately HP and torque by tinkering with the preload tension on the wastegate. It usually comes set from the factory at 11 PSI. If you increase it to 15-17 PSI, things will happen sooner.
Aug 13, 2007, 12:52 AM
#44
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alright, 500rwhp in a 2600 lbs car is just downright insane.
in. sane. your wife is awesome.
and yes, my IX with tbe, mbc, licp, drop-in filter and tune is still sluggish as **** from a take-off, especially on hot days like these few weeks with the a/c on...sometimes it drives me nuts just how little power there is.
sometimes what i do is i anticipate the light turning green, and right before it does i find the friction point and sometimes even let the car start moving a little bit, so once the light's green i'm not stuck on the same spot for a few seconds.
on normal temperature days the Evo's fine.
on another note the addition of the LICP and drop-in filter even BEFORE the tune really helped the Evo's low rpm/off line response.
compared to the ap1 with just aem v2, the Evo is sluggish as ***** from a stop.
compression, awd, WEIGHT are main factors IMHO.
edit: also check out www.socalevo.net if you havn't already
in. sane. your wife is awesome.
and yes, my IX with tbe, mbc, licp, drop-in filter and tune is still sluggish as **** from a take-off, especially on hot days like these few weeks with the a/c on...sometimes it drives me nuts just how little power there is.
sometimes what i do is i anticipate the light turning green, and right before it does i find the friction point and sometimes even let the car start moving a little bit, so once the light's green i'm not stuck on the same spot for a few seconds.
on normal temperature days the Evo's fine.
on another note the addition of the LICP and drop-in filter even BEFORE the tune really helped the Evo's low rpm/off line response.
compared to the ap1 with just aem v2, the Evo is sluggish as ***** from a stop.
compression, awd, WEIGHT are main factors IMHO.
edit: also check out www.socalevo.net if you havn't already
