Took CATS out and lost HP?!

[ElDiablo Viper]

I just read Sean's site and it looks like I'll be buying the sims.

Catalytic Converter Simulator Set
Required for 1998 and newer Vipers. Otherwise, your car will run too rich and turn on the check engine light.

 

[MadMaxx]

You have OBD-II to thank for that

James

 

[CitySnake]

Diablo:

I spoke with you about this once before. The HF cats actually add HP. Speak with Sean about it before you buy.

 

[GONABITE]

Adam,

If you want to go with high flow cats I have a new set still in the box from Sean Roe. The hot temps definetely did not help with your run air quality was prbably humid as well.

 

[ElDiablo Viper]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by GONABITE:
Adam,

If you want to go with high flow cats I have a new set still in the box from Sean Roe. The hot temps definetely did not help with your run air quality was prbably humid as well.

<HR></BLOCKQUOTE>

I have the Hi-flow cars from Sean but never installed them. I'm runing with no cats right now and will have to get the sims. I thought that I would not need it because I don't get the chk eng light.

 

[ElDiablo Viper]

My car at 60 deg with Corsa and K&N dyned 430RWHP and 468RWTQ. Today at 90+ deg with NO cats the car dynoed 424RWHP and 464RWTQ. It was not the same dyno but I was expecting minimum 10RWHP gain. Also the car run very FAT. At my best run I was 12.0-&gt;11.8 The hotter the car was the fater it run. At my hotest run I was at 10.7!!!

I wonder why I lost HP and if would make sense to install VEC1 from Sean R. I was told that if the car is tuned right that I should be at 450RWHP.