So, let me get this straight if this 24psi is indeed a proven fact:

-The X has a higher compression ratio of 9.0:1 versus 8.8:1
-The X has 24lbs of boost versus 19.6lbs of boost in the IX - increase of 4.4psi
-THe X makes only 5 more hp and 11ft/lbs of torque

This isn't adding up. Either the boost number is wrong or the Mitsu engineers suck at tuning.

 

Sorry to get a little but can somebody tell me why in Japanese media and I guess random culture, words are randomly pictured in english?? Why does it say LANCER EVOLUTION in english at the top of the right page?? And the website is in english at the bottom. Not to mention it tells you who took the photos in english. And, the name of the company, ARC is pictured in western letters. . . And the Best Motoring video has random words in english during it as well like IMPRESSIONS while everything else is in Japanese. . .

 

Probably because there is no direct translation.

Back to the topic of how more significantly more boost and a higher compression ration net gains of only 5 hp and 11ft/lb of torque, respectively.

 

OK, correct me if I am wrong here, I have never built an engine nor know much about doing so. . .but I thought that when you increase boost, you usually decrease compression as a compensation to get more power and/or avoid problems.

For example, when people go big turbo and want to run high boost pressures on engines like mine, the 1.8T, usually the first internal mod they do is forged low compression pistons. . .so wouldn't we expect a greater gain if the compression had been lowered and not raised?

 

Stock muffler weighs 28.85lbs, new ARC muffler weighs 18.19lbs.

 

Also, look at the brembos on the ARC evo, already baked the paint. Also, I find the boost pressure highly unlikely, it just doesnt make sense at all unless they designed a horrible flowing head and put a much smaller turbo than the IX on it.

 

Is that revspeed, from December, or January...???

 

Yes, the general rule is that with less compression, more boost is attainable. The higher the compression/boost combination, the harder it is on the motor because the more power you are adding in. That is why I brought up the point that it makes no sense that this motor is only putting out 5 more hp than the last and 11 more ft/lb of torque with significantly increase boost pressure and a slightly higher compression ratio. With that combo, it should easily be putting down well over 300hp. It just doesnt make any sense - it can't be 24 psi.

 

Yes its likely .. because you guys only see boost .. I see it as peak ..

until some *clown* (nice one at that! ) strap it to a dyno .. you'll never know that it makes only 5 more hp and 11ft/lbs of torque

You can have peak boost at 1.7 bar .. and then letting it taper to 1.3-1.4bar towards the higher rpms .. If the engine is designed properly .. it is possible to run safely at that boost in the mid rpms .. Don't forget the peak torque of the new car is so ridiculously low .. if you look at it .. it also doesn't add up

BTW I run 9.0:1 CR and a daily driven 26psi flat boost on pump (93) autoX tested for 2 years now .. everything is possible if a little thought is put into it ..

 

Yes, and i'll bet you are putting down way more than 291hp and 300ft/lb of torque. What a joke.

 

Guess you belong to the don't read group.. joke's on you ..

 

Why has ARC been makin parts for this car now and tracking it but you can't tell me they haven't put it on a dyno? Was it posted and I missed it?

 

 

Modified Evo X???

 

get a bigger pic next time ^^