# NO ppm too high **URL:** \ **Category:** SON240sx Automotive\ **Created:** [June 24, 2008, 4:30pm UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502 "2008-06-24T16:30:16Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Mr\_X](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mr_x/32/5599_2.png) [@Mr\_X](https://forums.speedlife.net/u/Mr_X)\ **Post date:** [June 24, 2008, 4:30pm UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/1 "2008-06-24T16:30:16Z")
I failed my etest today. I have a brand new 3" high flow cat and the EGR is blocked off. How can I lower my NO ppm? Getting the EGR to work again is not possible. 40km/h Limit Reading HC ppm 64 43 CO % 0.35 .06 NO ppm 485 1646 RPM 2816 Dilution 14.16 ---
**Author:** ![Hammer240sx](https://avatars.discourse-cdn.com/v4/letter/h/a3d4f5/32.png) [@Hammer240sx](https://forums.speedlife.net/u/Hammer240sx)\ **Post date:** [June 24, 2008, 4:57pm UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/2 "2008-06-24T16:57:02Z")
Retard your timing at the distributor and pray!! Honestly, it will be tough to pass without an egr. Get a timing light and retard your ignition timing down to 12-14 degrees or so, going too far will increase your other numbers. Stock timing is 20 degrees. ---
**Author:** ![EviltoM](https://avatars.discourse-cdn.com/v4/letter/e/97f17d/32.png) [@EviltoM](https://forums.speedlife.net/u/EviltoM)\ **Post date:** [June 24, 2008, 7:57pm UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/3 "2008-06-24T19:57:24Z")
I passed with an afr of 17:1 and 0\* of timing. But I have a standalone and made it happen. Good luck suckerface. ---
**Author:** ![Martino](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/martino/32/5674_2.png) [@Martino](https://forums.speedlife.net/u/Martino)\ **Post date:** [June 27, 2008, 9:11am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/4 "2008-06-27T09:11:03Z")
Hammer…to retard the distributor is it turn to the left or turn to the right? Which way is advance and which one is to retard lol…i cant remember (N) ---
**Author:** ![simplemind7](https://avatars.discourse-cdn.com/v4/letter/s/0ea827/32.png) [@simplemind7](https://forums.speedlife.net/u/simplemind7)\ **Post date:** [June 27, 2008, 9:18am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/5 "2008-06-27T09:18:22Z")
retarding the timing may work… it will be close without the EGR though. ---
**Author:** ![IRo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/iro/32/5564_2.png) [@IRo](https://forums.speedlife.net/u/IRo)\ **Post date:** [June 27, 2008, 9:28am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/6 "2008-06-27T09:28:11Z")
I’m In a simulare situation. if u dfind out the answer u let me know ---
**Author:** ![Intense\_Motorsports](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/intense_motorsports/32/5593_2.png) [@Intense\_Motorsports](https://forums.speedlife.net/u/Intense_Motorsports)\ **Post date:** [June 27, 2008, 10:50am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/7 "2008-06-27T10:50:17Z")
Same situation for me on the Honda. Turned out the High Flow cats are a 2 stage catalyst. High end aftermarket/OEM are 3 stage catalysts which makes a world of difference and allowed me to pass no problem. ---
**Author:** ![Zeta\_G](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zeta_g/32/5558_2.png) [@Zeta\_G](https://forums.speedlife.net/u/Zeta_G)\ **Post date:** [June 28, 2008, 4:53am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/8 "2008-06-28T04:53:07Z")
just snap on a normal 3-way cat do the etest and then put the highflow back on i just passed etest on a rebuilt rich running KA w/o egr and a new 3-way cat ---
**Author:** ![Pete\_FXT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pete_fxt/32/5512_2.png) [@Pete\_FXT](https://forums.speedlife.net/u/Pete_FXT)\ **Post date:** [June 28, 2008, 7:33am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/9 "2008-06-28T07:33:53Z")
Before you go get your etest make sure you engine and exhaust are at operating temperature. The cat works better at high temperatures. If your car is cold it will always have higher NO emission. The drive through places are the best. Given that there is no line up, you can go for a nice 10 minute drive first and test the car when it is at operating temperature, at this time your cat is hot. That will likely take care of your problem. The same thing goes for oilchanges, you want to change your oil when it is at operating temperature and any deposits in the engine are in the oil. When the oil gets drained all the polutants flow out. ---
**Author:** ![nd4boost](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nd4boost/32/5627_2.png) [@nd4boost](https://forums.speedlife.net/u/nd4boost)\ **Post date:** [June 29, 2008, 6:37pm UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/10 "2008-06-29T18:37:19Z")
liquid methyl hydrate ---
**Author:** ![DarkManX](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/darkmanx/32/5569_2.png) [@DarkManX](https://forums.speedlife.net/u/DarkManX)\ **Post date:** [July 14, 2008, 6:27am UTC](https://forums.speedlife.net/t/no-ppm-too-high/116502/11 "2008-07-14T06:27:42Z")
if anyone needs an etest. pm me