VIDEO: AMS EVO dyno pull
Maybe it is correct man and if it is that is extremely impressive. I saw this car on the street and it seemed a little bit laggier than that. It does not bother me any as I think lag is overrated for the type of racing that I like. I was just surprised when I saw the video. 0 boost at 3500rpm and 35psi at 4200rpm.
Originally Posted by Big Boost
I believe that is why others including myself, would like to see a video on the street either from a dead stop or from a roll @ 2000 rpms...
Also, I am not an expert by any means, I am just very interested in this set-up for myself and I am trying to understand full boost in terms of lack of lag for driviability on the street. From what I understand this set-up comes close to stock-like spool even though your are pushing significantly more air.
Is this type of boost really that hard to achieve without the aid of NOS? Listed below is a quote from AMS about this kit & a 35R
-Martin
Here is the link to the entire thread:
https://www.evolutionm.net/forums/sh...4&page=1&pp=15
Any thoughts here from the experts would be appreciated.
Also, I am not an expert by any means, I am just very interested in this set-up for myself and I am trying to understand full boost in terms of lack of lag for driviability on the street. From what I understand this set-up comes close to stock-like spool even though your are pushing significantly more air.
Is this type of boost really that hard to achieve without the aid of NOS? Listed below is a quote from AMS about this kit & a 35R
Originally Posted by AMS
We just ran the car at 24psi with water injection and made 501whp and 430ft-lbs of torque. I did some road tuning with this car the last few days and it will start making boost at 2200-2400rpm with 10psi by 3K in 4th gear and 24-25psi by 3500-3600rpm. Awesome car to drive with a very wide powerband, perfect for the street or road course. You have full power and torque from 3500rpm to 8000rpm. Where the stock turbo start to drop power at 6500rpm this thing keeps making power all the way to redline. To compare power bands, the stock turbo hits full boost at around 2.9-3K rpm and makes usable power to 7K rpm, the stroker 35R setup hits full boost at 3.5-3.6K rpm and makes useable power to over 8Krpm. Not only are you making much more power but you are also extending your usable power band, which is very important to having a fast car. Peak HP gives you bragging rights, wide power bands give you a fast street car. If you have high HP and a wide power band then you have the ultimate street/strip car.
Originally Posted by AMS
-Martin
Here is the link to the entire thread:
https://www.evolutionm.net/forums/sh...4&page=1&pp=15
Any thoughts here from the experts would be appreciated.
FWIW, I got a ride in the AMS Evo last year when it was still a lowly 2.0 liter with their GT35R kit, no NOS. Full boost hit at 4200 rpm. If you take that number and do the math for how much more air a 2.3 liter engine will move, then it's easy to extrapolate that it should spool up ~400-500 rpm sooner than a 2.0 liter. So I'm guessing that if they had hit the gas before 3500 rpm (perhaps @ 2500), then they should have hit full boost around 3700-3800 rpm.
l8r)
What is this car using for boost control? Is it controlled with the EMS, some MBC or some other EBC?
The reason I ask is that *if* it hadn't already been explained earlier, my take on the video is that the boost profile on this car has been tuned to keep the wastegate open until 3,200 rpm. Basically the effect is the same as holding partial throttle to maintain zero boost and then going WOT.
I may be way off, but my calculations show that an off the shelf GT35R will skirt the edges of the surge line of the compressor map at low RPMs on a 2.3L. Ramping the boost up at WOT at low RPMs combats this.
Anyway, I'm not trying to take ANYTHING away anything from this car. It's friggin awesome.
11psi by 3600rpm
20psi by 3750rpm
30-31psi by 4000rpm
55 to 120mph in 5.5 seconds? Absolutely sick! If my build comes remotely close I'll be sh itting bricks!
I'd also like to know what size injectors and fueling system is in this car. I bet this thing is running out of fuel if it's on a Walbro 255.
The reason I ask is that *if* it hadn't already been explained earlier, my take on the video is that the boost profile on this car has been tuned to keep the wastegate open until 3,200 rpm. Basically the effect is the same as holding partial throttle to maintain zero boost and then going WOT.
I may be way off, but my calculations show that an off the shelf GT35R will skirt the edges of the surge line of the compressor map at low RPMs on a 2.3L. Ramping the boost up at WOT at low RPMs combats this.
Anyway, I'm not trying to take ANYTHING away anything from this car. It's friggin awesome.
11psi by 3600rpm
20psi by 3750rpm
30-31psi by 4000rpm
55 to 120mph in 5.5 seconds? Absolutely sick! If my build comes remotely close I'll be sh itting bricks!
I'd also like to know what size injectors and fueling system is in this car. I bet this thing is running out of fuel if it's on a Walbro 255.
Last edited by propellerhead; Jun 30, 2005 at 01:29 PM.
Originally Posted by propellerhead
What is this car using for boost control? Is it controlled with the EMS, some MBC or some other EBC?
I'd also like to know what size injectors and fueling system is in this car. I bet this thing is running out of fuel if it's on a Walbro 255.
I'd also like to know what size injectors and fueling system is in this car. I bet this thing is running out of fuel if it's on a Walbro 255.
1000cc injectors with an AMS 1200Hp fuel system
The reason the wideband was reading so lean was due to the fact that the O2 sensor was done. The dyno registered the AFR's quite rich at 11.2-11.3 or so.
Originally Posted by Smogrunner
Holy hot damn. I'm scared.
l8r)
Haha I'm curious if Stage 3 from AMS will pass emissions in California.