Race gas 112 octane JB4 Stock car what map? How much HP est?

mightbaal · 05-27-2015, 04:31 AM

I just got my JB4 in my car other than that the car is 100% stock. I love the extra hp from the JB4 stock map but I was wondering if I put 10 gallons of race gas 112 octane on a 1/8 tank or less of 93 octane how much more boost can I run when everything else is stock. What map would be good on the JB4 map 7? Map 5 (auto tune 12-17 psi)? Could I run map 2? Just wondering what I can do here cause I really want to beat my friends 2008 LS3 Corvette base coupe. I have a 2008 bmw 335xi. How much horsepower we talking (crank wise)? I have a DCI in the mail but wont be here till Monday and other mods will come in the future but not for now. Had the car for less than a week.
Thanks

idratherbesurfing · 05-27-2015, 08:23 AM

Is that 112 leaded or unleaded?

Antetokounmpo · 05-27-2015, 09:33 AM

mojobmw_e90 · 05-27-2015, 09:36 AM

Ur not beating a ls3 vette with race gas and jb4..need more mods

19E92 · 05-27-2015, 09:36 AM

Kinda interested to hear what people say.

Jeff@TopGearSolutions · 05-27-2015, 09:38 AM

Without logs anyone is guessing. I'd start at Map 5 and see how the logs look. You could probably get away with Map 2.

Oh and don't run leaded gas in these cars. I think 100 octane is unleaded or if you have E85 run about 30%.

n54gte · 05-27-2015, 10:26 AM

do it from a dig

Milan · 05-27-2015, 10:30 AM

With an Xi you are not beating your friend without FBO + RBs. If he has any mods then you are screwed no matter what you do.

Eat.Sleep.Race · 05-27-2015, 11:51 AM

Run Map7, get some downpipes and charge pipe/bov and go to town. 12.5 is what your gonna run with those mods.

tc535i · 05-27-2015, 11:52 AM

Quote:

Originally Posted by Jeff@TopGearSolutions

Without logs anyone is guessing. I'd start at Map 5 and see how the logs look. You could probably get away with Map 2.

Oh and don't run leaded gas in these cars. I think 100 octane is unleaded or if you have E85 run about 30%.

does it matter if you're catless? I thought that was the only real issue with leaded fuels

Infamy · 05-27-2015, 01:18 PM

Quote:

Originally Posted by tc535i

Quote:

Originally Posted by Jeff@TopGearSolutions

Without logs anyone is guessing. I'd start at Map 5 and see how the logs look. You could probably get away with Map 2.

Oh and don't run leaded gas in these cars. I think 100 octane is unleaded or if you have E85 run about 30%.

does it matter if you're catless? I thought that was the only real issue with leaded fuels

It affects the oxygen sensors.

tc535i · 05-27-2015, 02:37 PM

That's true, I have heard leaded fuel will kill a sensor after 50-100 hours, quicker if you're running rich and spitting unburned fuel thru the system

mightbaal · 05-27-2015, 05:42 PM

Quote:

Originally Posted by Milan

With an Xi you are not beating your friend without FBO + RBs. If he has any mods then you are screwed no matter what you do.

Really? All he has is an intake nothing else... I know he is lighter the stock motor he has is 436+ maybe what 10-15 for the intake so around 450 hp he is lighter... I am ok with doing the FBO its the RB's I do not wana do thats to much for me... might take him with 500 crank hp (as is?)... reason why I want to beat him is he says he will supercharge the Vette the second my BMW is faster n I wana see what a 650+ vette feels like lol.

Jklad · 05-27-2015, 06:21 PM

You won't beat the vet unless it's off the line to 30mph and he is a truly crappy driver, in which case he would have an automatic so it wouldn't matter anyways. And if your asking this I would have to question your drag racing skills as well ...

beetle6986 · 06-22-2015, 10:09 PM

Quote:

Originally Posted by mightbaal

I just got my JB4 in my car other than that the car is 100% stock. I love the extra hp from the JB4 stock map but I was wondering if I put 10 gallons of race gas 112 octane on a 1/8 tank or less of 93 octane how much more boost can I run when everything else is stock. What map would be good on the JB4 map 7? Map 5 (auto tune 12-17 psi)? Could I run map 2? Just wondering what I can do here cause I really want to beat my friends 2008 LS3 Corvette base coupe. I have a 2008 bmw 335xi. How much horsepower we talking (crank wise)? I have a DCI in the mail but wont be here till Monday and other mods will come in the future but not for now. Had the car for less than a week.
Thanks

FBO and e85 should put you about even with a ls3.

n54gte · 06-23-2015, 12:12 AM

You will slay z06 do it now

05-27-2015, 04:31 AM	#1
mightbaal g35x 105 Rep 630 Posts Drives: 2008 BMW 335XI Join Date: May 2015 Location: wisconsin iTrader: (0)	Race gas 112 octane JB4 Stock car what map? How much HP est? I just got my JB4 in my car other than that the car is 100% stock. I love the extra hp from the JB4 stock map but I was wondering if I put 10 gallons of race gas 112 octane on a 1/8 tank or less of 93 octane how much more boost can I run when everything else is stock. What map would be good on the JB4 map 7? Map 5 (auto tune 12-17 psi)? Could I run map 2? Just wondering what I can do here cause I really want to beat my friends 2008 LS3 Corvette base coupe. I have a 2008 bmw 335xi. How much horsepower we talking (crank wise)? I have a DCI in the mail but wont be here till Monday and other mods will come in the future but not for now. Had the car for less than a week. Thanks Attached Images
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05-27-2015, 08:23 AM	#2
idratherbesurfing Captain 145 Rep 841 Posts Drives: 2009 e90 335i Lci Join Date: Mar 2014 Location: NJ iTrader: (0)	Is that 112 leaded or unleaded?
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05-27-2015, 09:33 AM	#3
Antetokounmpo Brigadier General 1550 Rep 3,475 Posts Drives: E90 6MT FBO; '18 F150 Platinum Join Date: Jul 2013 Location: WI iTrader: (3) Garage List 2018 Ford F-150 Pla ... [0.00] 2008 BMW 335xi [0.00]	__________________ 2008 335xi 6MT \| VRSF Catless DP \| VRSF 7" FMIC \| VRSF CP \| TIAL BOV \| DCI \| MHD 2+ BC Racing BR \| Stoptech 600 \| Firehawk Indy 500 255 Square \| Atric Altimax 225 Sq. 2018 F-150 Platinum 701A \| FX4 \| 3.5 EcoBeast
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05-27-2015, 09:36 AM	#4
mojobmw_e90 Major 380 Rep 1,497 Posts Drives: 2014 E63S Join Date: Oct 2014 Location: Chicago IL iTrader: (3)	Ur not beating a ls3 vette with race gas and jb4..need more mods
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05-27-2015, 09:36 AM	#5
19E92 Private First Class 35 Rep 174 Posts Drives: '07 335i / '11 535i xDrive Join Date: May 2011 Location: Toronto, Canada iTrader: (2)	Kinda interested to hear what people say. __________________ Monaco Blue E92 // BMS JB4 G5 ISO // BMS Backend Flash // Dual Cone Intake // ER Chargepipe // Dual HKS SSQV BOV Setup // BMW Performance Spoiler // 19" v710 Dolphin Grey // Aero Front Lip // M3 Sideskirts // Mtech Rear Bumper // Quad Tip Diffuser // Quad Exhaust //
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05-27-2015, 09:38 AM	#6
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Without logs anyone is guessing. I'd start at Map 5 and see how the logs look. You could probably get away with Map 2. Oh and don't run leaded gas in these cars. I think 100 octane is unleaded or if you have E85 run about 30%.
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05-27-2015, 10:30 AM	#8
Milan Captain 202 Rep 649 Posts Drives: F80 M3 Join Date: May 2014 Location: Boise, ID iTrader: (7)	With an Xi you are not beating your friend without FBO + RBs. If he has any mods then you are screwed no matter what you do. __________________ 17 M3 Comp
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05-27-2015, 11:51 AM	#9
Eat.Sleep.Race Out Boosting... 242 Rep 3,987 Posts Drives: F30 335i M-Sport Join Date: Feb 2014 Location: Northern VA iTrader: (7)	Run Map7, get some downpipes and charge pipe/bov and go to town. 12.5 is what your gonna run with those mods. __________________ Alpine White M-Sport F30
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05-27-2015, 02:37 PM	#12
tc535i Lieutenant Colonel 215 Rep 1,818 Posts Drives: 2007 335i, 2001 330i, 1995 M3 Join Date: Sep 2013 Location: West Los Angeles iTrader: (1)	That's true, I have heard leaded fuel will kill a sensor after 50-100 hours, quicker if you're running rich and spitting unburned fuel thru the system
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05-27-2015, 06:21 PM	#14
Jklad Lieutenant Colonel 421 Rep 1,643 Posts Drives: 2007 335i Coupe Join Date: Nov 2010 Location: Palatine, IL iTrader: (0)	You won't beat the vet unless it's off the line to 30mph and he is a truly crappy driver, in which case he would have an automatic so it wouldn't matter anyways. And if your asking this I would have to question your drag racing skills as well ... __________________ 2007 E92 335i MT
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06-23-2015, 12:12 AM	#16
n54gte Lieutenant 42 Rep 537 Posts Drives: prius Join Date: Jun 2012 Location: north korea iTrader: (0)	You will slay z06 do it now
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