How much retard on the nitrous???

Blaster · 06-09-2007, 11:42 AM

I have a MSD Digital 6 plus on my car and am running a 125hp wet shot on the car. How much timing retard should i take out on my MSD when the nitrous is on??? I have heard take out anywhere from 2 degrees on the box up to 6.5 degrees!!! Does my MSD retard the initial or advanced timing??? Suggestions??? I run 14 degrees inital timing off the juice.

USMC302 · 06-10-2007, 01:28 AM

14 sounds ok, but the rule of thumb is 2 degrees for every 50 hp. The MSD will retard the current timing setting. Usually the retard boxes take out those many degrees per lb of boost, not sure about the retard function with a NOS on the MSD box.

fiveohpatrol · 06-10-2007, 09:07 PM

the general rule of thumb is 2* per 50hp jetting, so this would be 5* for your 125hp shot.

Coupe50h · 06-26-2007, 08:17 AM

My buddy ran the same setup, he pulled out 6* to be safe, but then he had to install a nitrous delay after nearly blowing his intake off the car

Be cautious with a wet kit.

06-09-2007, 11:42 AM	#1
Blaster Registered Member Join Date: Mar 1999 Location: Canada Posts: 66	How much retard on the nitrous??? I have a MSD Digital 6 plus on my car and am running a 125hp wet shot on the car. How much timing retard should i take out on my MSD when the nitrous is on??? I have heard take out anywhere from 2 degrees on the box up to 6.5 degrees!!! Does my MSD retard the initial or advanced timing??? Suggestions??? I run 14 degrees inital timing off the juice.

06-10-2007, 01:28 AM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: How much retard on the nitrous??? 14 sounds ok, but the rule of thumb is 2 degrees for every 50 hp. The MSD will retard the current timing setting. Usually the retard boxes take out those many degrees per lb of boost, not sure about the retard function with a NOS on the MSD box. __________________

06-10-2007, 09:07 PM	#3
fiveohpatrol I'd rather be basketweaving Join Date: Feb 2000 Location: Indianapolis Posts: 2,551	Re: How much retard on the nitrous??? the general rule of thumb is 2* per 50hp jetting, so this would be 5* for your 125hp shot. __________________ NMRA O/C 9516 NA pumpgas stickshift 347 10.65@125.6, 6.73@100, 1.41 60ft

06-26-2007, 08:17 AM	#4
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Re: How much retard on the nitrous??? My buddy ran the same setup, he pulled out 6* to be safe, but then he had to install a nitrous delay after nearly blowing his intake off the car Be cautious with a wet kit. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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