Since there has been some controversy about different performance products, I personally took my car (on a very short notice) to a local shop and had the GS4 dynoed. The car was dynoed as an "everyday driver." There was NO tunning done. The odometer is now at 60K and the performance mods have been in place for around 30K miles. The car made 2 consecutive runs at 242.6 and 242.5 RWHP.

Hope this serves as a helpful guide for all you guys.





You can also download a 40MB video of the run at http://lexuscreations.com/videos/GS400Dyno.avi Please right click and "save as"

 

Confusing message, explain the dyno information and when it was done. The car was bone stock with your numbers or......

 

The video as well as my sig shows the performance mods. The car was NOT tested stock. It was tested with several mods. The dyno was done today 8/24/2001

 

So mariusz basically the 242 wrhp is with SRT INtake/ECU system and Lsportline exhaust.

 

Exactly.

 

dont forget the 20" rims right marisuz? wouldn't that make a difference?

 

What would the dynoed numbers be for a STOCK GS4?

 

I think it matters and that's why Mariusz's result is 5 rwhp less than SRT's result.

Mariusz,
Thank you for your information. We really appreciate it.

 

stock GS400 runs at 236 rwhp

 

At least now we know the result with SRT HFI/ECU is about 248 rwhp. Now only if Mariusz could dyno his stock GS.

 

249 - 236 - 5 (exhaust) = the gain from SRT intake/ecu system. do the math.

 

8hp?

 

Borla has the peak gain of 7 to 8 hp.

 

Hey Mariusz, didn't you post a link of a 500 mb movie of your car some time ago?
I can't seem to vind it.
I now have a broadband connection and would like to download it.

Thanks in advance.

Richie

 

so you guys are saying with srt hfi/ecu there is only a 8hp gain? what is the torque gain from srt intake/ecu?