Ignition Thoughts/Ideas/Recommendations

***TitaniumTT*** · 09-07-2009, 10:21 PM

Paul Yaw has a set of Bosch coils that he has dyno proven will make more torque at equivalent charge times. I plan on upgrading to these over the winter. Aside from that little tidbit of information, I really have nothing else to input on the coils themselves. I plan on contacting him in the near future.

LS1 coils are quite robust. I have had only one problem firing a wet plug (which I pulled, blew out, re-installed and have run for >1100 miles now) BUT they do like alot of dwell time and running them in wasted for the leading is just not going to happen. I'm pretty sure I'm going to be out of coil when I up the rev limit to 8k

Renni coils are something else to consider as they are designed to fire a 9k rpm rotary........... although you have that wasted spark to deal with.......... although you said you could build some sort of electronic trickery to toggle the signal.......

FWIW I was speaking with Motec about the shortfalls of the LS1 coils. We discussed three possibilities.

Yukon LS2 coils - good
Renni coils - Good - he rec'd them to me a while back but I went LS1 for ease of procurement and when I suggested them again is when he mentioned Paul doing a back to back dyno of renni coils vs the Bosch ones and the Bosch made more torque.

So it's either Yukon LS2 or Bosch over the winter for me.

09-07-2009, 10:21 PM	#7
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Paul Yaw has a set of Bosch coils that he has dyno proven will make more torque at equivalent charge times. I plan on upgrading to these over the winter. Aside from that little tidbit of information, I really have nothing else to input on the coils themselves. I plan on contacting him in the near future. LS1 coils are quite robust. I have had only one problem firing a wet plug (which I pulled, blew out, re-installed and have run for >1100 miles now) BUT they do like alot of dwell time and running them in wasted for the leading is just not going to happen. I'm pretty sure I'm going to be out of coil when I up the rev limit to 8k Renni coils are something else to consider as they are designed to fire a 9k rpm rotary........... although you have that wasted spark to deal with.......... although you said you could build some sort of electronic trickery to toggle the signal....... FWIW I was speaking with Motec about the shortfalls of the LS1 coils. We discussed three possibilities. Yukon LS2 coils - good Renni coils - Good - he rec'd them to me a while back but I went LS1 for ease of procurement and when I suggested them again is when he mentioned Paul doing a back to back dyno of renni coils vs the Bosch ones and the Bosch made more torque. So it's either Yukon LS2 or Bosch over the winter for me. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**