Very interesting topic i found on Taiwan lexus club

don't know if anyone posted before.

Here is link to the company:
http://www.rgmotorsport.com/html/lexus_is250.html

whole system upgrade

will push is250 up to

370hp/6500rpm 38.3kgm/5500rpm

 

It's been posted before... I think its BS..

 

buy it and let us know how it goes. hahaha

 

If everyone chips in and sends me all of their money, I will be glad to get this done asap! lol

 

Is that the south African company? Fishy as hell none of their dyno numbers ever make sense and the offer very few specifics on what they're doing

165 rwhp gain from only 7 lbs of boost? Riiiiight

 

I am the original poster about this company. I ran into them at last years SEMA show and have been following the progress for a while. Attached is the latest new letter that I have from them. I understand the skepticism as it is very warranted. But I am an optimist.

 

Those dyno "charts" are an absolute joke.

 

I've followed this also and optimistic the 375 is the engine HP. Looks like a reputable company in South Africa. From the other stuff you posted from RG the rwhp from their kit is 248 from 139. I know the 139rwhp is lower than whats been posted. I think I've seen 162rwhp-177rwhp on here.

 

From one of Gaugster other postings they give a lot of details. Actually 109rwhp gain 139-248rwhp. They added alot of hardware to their kit (which means added cost) so I think it possible to get near 7psi ,wont believe that until a kit lands in the US. I did learn that they get 93octane and many stations have 95.

95 octane was used for their kit plus they are using a piggyback to adjust the timing and fuel from an intank walbro pump upgrade /w an added exrenal fuel pump. Time will tell how well this works
Of course if this works then no telling how much boost drop we will see in US w/ 93 octane or where some only can get 91 octane like in Colo. So we might be right back at 5-6 psi w/ 91 octane unless you want to add octane booster to every tank.

 

Octane booster huh? LMAO.

 

139 is about 35 low stock so the stock dyno is bull

7 psi is possible in high octane and a liquid-air intercooler

Gaining even -half- the hp they claim with only 7 psi is even bigger bull at 370 rwhp from orignal post


Now 248 is more like a 75 gain from a -real- stock 250 pull which is a touch high for 7 psi but not impossible

It's still 30 or so less than 3500 bucks gets you buying a 350 over a 250 and you keep your warranty

Supercharging a 250 is just a loser from get go

 

What if they use a Lysholm screw supercharger as opposed to the roots one that everyone else used? Theoretically they should be able to run it on 5-7 psi and get some pretty good numbers

 

They use a vortech v2 blower- says so right at the link posted earlier for them

 

i wanna to try it out if it is in CA

 

Did you guys even bother to check the time that they were running? it says 0-62 mph was done in 10.44 on a stock is250 and the s/c one ran a 7.46
We all know is250s are slow but not 10 sec slow on a 0-62 run. And even if that the tests were done at 6000 feet, you guys think thats an accurate run?