h/c 200 shot with br7's ?
09-26-2013, 09:34 AM
#1
h/c 200 shot with br7's ? Currently I have br7's for a 175 [n.o 90mm plate wet setup] shot, but was thinking stepping up to a 200 shot. Would the br7's suffice or I need to step up to the 8's? I remember when I first switched from tr6's to br7's the car's performance dropped [or felt that way] when running n/a. Would I see a performance drop on the 8's from the 7's? can I run more timing n/a to compensate the colder plug? .. what you fellas think?
Last edited by white2kbird; 11-10-2013 at 02:29 PM.
09-26-2013, 12:09 PM
#3
i've been spraying a 200 shot on my 5.3 with ac delco r42lts plugs and the plugs look great (its like a br6ef plug)... i think you'll be fine with the 7s. i wanted to up the shot on my car so i dropped in some br8ef plugs and noticed a big drop in performance, enough that i threw some new r42lts plugs back in. i think i have the 8's laying around i only drove on them for a week if you want to give them a try ill let them go cheap.
09-26-2013, 12:33 PM
#4
09-26-2013, 12:41 PM
#5
i've been spraying a 200 shot on my 5.3 with ac delco r42lts plugs and the plugs look great (its like a br6ef plug)... i think you'll be fine with the 7s. i wanted to up the shot on my car so i dropped in some br8ef plugs and noticed a big drop in performance, enough that i threw some new r42lts plugs back in. i think i have the 8's laying around i only drove on them for a week if you want to give them a try ill let them go cheap.
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09-26-2013, 03:10 PM
#9
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When I switched from TR6's to BR7's I didn't notice a drop in n/a performance whatsoever. If you could actually "feel" a drop in power after the plugs i'd be very surprised, and have to think it was attributed to something else
09-26-2013, 03:24 PM
#11
Currently I have br7's for a 175 [n.o 90mm plate wet setup] shot, but will be stepping up to a 200 shot. Would the br7's suffice or I need to step up to the 8's? I remember when I first switched from tr6's to br7's the car's performance dropped [or felt that way] when running n/a. Would I see a performance drop on the 8's from the 7's? can I run more timing n/a to compensate the colder plug? If the 7's are fine for the 200 then I won't fiddle with the 8's... what you fellas think?
If your cars performance dropped from the plug change you needed to clean up the tune to match the plug you are running.
09-26-2013, 04:49 PM
#13
i've read that alot of people claim to loose little or no power, but i definitely felt the power loss on the butt dyno... i would like to see a side by side dyno comparison i would put money on it being like 10+ hp
09-26-2013, 05:02 PM
#16
As Dave said its probably a deal with the tune. It will feel more responsive if you get the tune cleaned up and drive-ability will be much better. I remember a thread on here where a guy posted his NA numbers before and after the plug swap and he was only down like 6 horsepower if i remember correctly.
09-26-2013, 09:55 PM
#20
I would take your money. Absolutely 0 difference. Changed plugs on the dyno to boot. The 7's will be fine for 200 shot.