Murf 928 85/86 Supercharger update & Dyno Charts (aka - Shane's new car)
04-30-2008, 03:32 AM
#46
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Beth got a RMB this afternoon, which was a real eye opener as too how restrictive that rear muffler really is. She now revs much faster through the lower rpms before the boost comes on. I'll probably go to the dyno on Thursday just to do a comparison and see what the air/fuel does. She certainly pulls harder then she did without the rmb.
Afshin you will really enjoy the experience and I'm sure if you make it to SITM you will get a chance at it.
Afshin you will really enjoy the experience and I'm sure if you make it to SITM you will get a chance at it.
You have a nice stable going there Shane...you need a lift in that "hanger" Glad you made it home uneventfully
04-30-2008, 09:32 AM
#47
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Glad you made it home safely. More importantly that you had fun on your road trip home.
So let's see, 4,000 @ 19mpg = 210.5 gallons of fuel @ ~ $3.79/gal = $800 gas.
So let's see, 4,000 @ 19mpg = 210.5 gallons of fuel @ ~ $3.79/gal = $800 gas.
04-30-2008, 09:35 AM
#48
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Beth got a RMB this afternoon, which was a real eye opener as too how restrictive that rear muffler really is. She now revs much faster through the lower rpms before the boost comes on. I'll probably go to the dyno on Thursday just to do a comparison and see what the air/fuel does. She certainly pulls harder then she did without the rmb.
Afshin you will really enjoy the experience and I'm sure if you make it to SITM you will get a chance at it.
Afshin you will really enjoy the experience and I'm sure if you make it to SITM you will get a chance at it.
So, you have the '86 center mufflers still on there?
I was waiting to hear whether there was a distinction to be made between center and rear mufflers with respect to backpressure.
I had a Euro-spec rear muffler on my 83 for a while,they are supposed to have a different tone, I wonder whether they have any less b/p.
I have a muffler bypass on hand, but I'm pretty happy with the tone and loudness of the current system...
04-30-2008, 12:51 PM
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If the RMB even frees up half of the 7 psi back pressure we measured you will see a 30HP gain.
You need raise your fuel pressure up to at least S4 spec because we were maxing out those 42lb injectors already.
You can use the SharkTuner to adjust the injector size if needed and the rest of the fuel tables should be pretty close. You might have to reduce the last cell in the WOT map because we were asking for more fuel there than we could get at the time. Should be close though.
You need raise your fuel pressure up to at least S4 spec because we were maxing out those 42lb injectors already.
You can use the SharkTuner to adjust the injector size if needed and the rest of the fuel tables should be pretty close. You might have to reduce the last cell in the WOT map because we were asking for more fuel there than we could get at the time. Should be close though.
05-03-2008, 02:51 AM
#50
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C O N G R A T U L A T I O N S !!!
Congratulations, Shane! 
Looks like you landed a real ('nother) beauty for your, uh, yeah -- hangar!
Soo, she handled like a 'Beth', eh?
86.5 ROCKS!
Kim
Looks like you landed a real ('nother) beauty for your, uh, yeah -- hangar!
Soo, she handled like a 'Beth', eh?
86.5 ROCKS!
Kim
10-18-2014, 01:27 AM
#54
