Maybe I got a bad batch of fuel here, but Ive been able to run 13psi with only 2-3 degrees of KR while running chevron 91 with the stock chip. I just filled up with Shell, and at the same boost and fuel pressure, I got 12 degrees of KR! No matter what, I always get at least 8 KR. I turned it down to 10psi and Im still getting almost 5. Maybe I'm sniffing too much exhaust fumes, but my cobra always ran much better on chevron as well. I have 43psi FP static and the stock chip. Maybe i need to swap it for my chip with 19 degrees and fan on at 160. Only bad thing about running that chip is, that it always smells dirty...like the motor isnt hot enough to burn off all the hydrocarbons. It stinks like gas and oil all the time.
Whats your experience with pump gas?
- Thread starter VadersV6
- Start date
blackstallion
New Member
- Joined
- Jul 7, 2003
Well i also live here in cali and 91 octane at the punp is the best we can get to me 91 octane is a major problem.What type of fuel pump do you have is it stock you should be able to run at least 13 lbs with the stock chip with no kr a 160 thermostat and having the fan on may help a little bit.If you really want to be safe pour some xzylene in the tankl better yet get yourself and alchy kit,or or make your own kit,thats what i did us cali guys should all be running alchy for our daily drivers we have the worst pump guys,and the hardest emissions tests.My car can run 14 lbs with maybe 1 degree kr.
76 with ethanol has always worked best for me. Cheveron a close second. I just as soon put Arco in my car as use Shell. Our local Rottin Robbie or USA gas works better then Shell.
91 octane sucks. Oxygenated 91 octane is even worse. I feel your pain. Many people probably don't realize how lucky they have it with 93 octane.
91 octane sucks. Oxygenated 91 octane is even worse. I feel your pain. Many people probably don't realize how lucky they have it with 93 octane.
Thanks for the tip! Ive never been a 76 user, but will from here on out. Like 5 years ago, my cobra always ran really good with Shell. Lat couple years, it sucks. Back in the late 80's, the Shell premium used to have this bright red hue to it and all the local street racers swore by the stuff. Some change happened with it probably about 1992. Now its probably the same as arco. A buddy of mine at works wife, works at a gas refinery for arco. She swears that everything you end up with at all the pumps at all the stations is the same crap. I call BS on that one.....you cant argue with the scanmaster!
So how much boost can you run without the alky, with the 76 gas? How much timing are you running?
So how much boost can you run without the alky, with the 76 gas? How much timing are you running?
You are going to love alky, with 93 Amaco and Razor's PAC kit I was able to run 26# of boost with a TA49 with 0KR. I do have a PTE front mount which lets me run close to 17# 0 KR on just pump gas (93). I think you will be able to run 21-23# with the alky with 23/21 timing.
blackstallion
New Member
- Joined
- Jul 7, 2003
Your stock fuel pump is a big problem the sock is probably collapsed tahts why u are getting kr 13lbs and 8degrees kr thats way too much with a stock chip.once u upgrade the pump it should help,but not by much it i was able to run atr strip chip 32 degrees at wot 19 psi on 91 octane on alky 2 degrees kr on shift points,stock turbo/ic/injectors/233regulator/3inch exhaust/kn.Once i discovered alky my cars performance was better than it was on 100octane.
Red Regal T
Senior Member
- Joined
- May 24, 2001
Yeah...........stop torturing yourself and giving other brands the advantage. Get some alky injection on those TRs.
Just so happened to log, a pass today.
TA60, 60 PPH injectors,F/M. Street tires, sway bars, basically your daily driver. 250 K/Pa=~ 21 PSI
Takes a while to get the tune right to do this sort of thing, but, it can be done.
Yes, 91 Octane.
TimeStamp: 02/02/2005 - 12:14:17
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:39 0 2450 124 100 152 59 22.2 9.72 10.9
17:39 0 2500 127 100 152 59 19.4 9.90 10.8
17:39 0 2525 131 100 152 59 19.4 10.13 10.6
17:39 0 2550 135 100 152 58 19.4 10.42 10.9
17:39 0 2625 138 100 152 58 20.8 10.79 10.6
17:39 1 2675 144 100 152 58 20.8 11.12 11.0
17:39 1 2775 149 100 152 57 20.8 11.67 10.7
17:39 2 2850 152 100 152 57 21.5 11.99 10.9
17:39 4 2925 158 100 152 57 21.5 12.06 11.1
17:39 4 3025 170 100 152 57 21.1 12.93 10.9
17:39 5 3150 173 95 152 57 21.5 13.20 11.1
17:39 7 3225 184 82 152 57 21.1 13.93 11.4
17:39 7 3375 194 76 152 56 21.5 14.89 11.4
17:39 9 3450 203 76 152 56 19.0 15.67 11.3
17:39 11 3575 211 76 152 56 12.0 16.56 11.2
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:40 11 3650 215 69 152 56 9.9 16.71 11.5
17:40 14 3725 223 68 152 56 12.3 16.65 11.3
Bad Packet @ 0xBB8C
17:40 16 3950 224 66 152 56 12.3 16.54 11.1
17:40 18 4050 229 64 152 55 16.9 16.48 11.2
Bad Packet @ 0xBEC7
17:40 21 4150 223 53 152 55 16.9 16.68 10.7
17:40 23 4050 222 53 152 55 19.0 16.25 11.1
17:40 26 4025 222 53 152 55 19.0 16.25 11.6
17:40 26 4075 219 50 152 54 19.0 16.07 11.2
17:40 31 4100 217 49 152 54 20.1 16.16 10.8
17:40 35 4100 211 45 152 54 20.4 16.02 11.1
17:40 35 4100 209 45 152 53 20.4 15.69 11.4
17:40 38 4100 206 45 152 53 21.1 15.47 10.9
17:40 40 4100 205 45 152 53 21.5 15.34 10.7
Bad Packet @ 0xC98F
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:41 41 4025 204 45 152 53 21.8 15.15 11.6
17:41 42 4000 203 43 152 53 21.8 14.91 11.0
17:41 42 3975 195 38 152 53 22.2 14.54 10.6
17:41 42 3900 192 44 152 53 22.2 14.54 10.5
17:41 42 3875 198 49 152 53 22.2 14.97 0.0
17:41 42 3875 208 55 152 52 21.5 15.79 10.9
17:41 42 3875 215 65 152 52 21.1 16.44 10.3
17:41 41 3925 218 73 152 52 21.1 16.25 0.0
17:41 41 3975 223 80 152 52 21.1 16.44 0.0
17:41 41 4000 227 87 152 52 21.1 16.66 0.0
17:41 41 4075 229 93 152 52 21.1 16.91 10.8
17:41 41 4100 232 97 152 52 17.6 17.47 10.4
17:41 41 4100 235 97 152 52 19.4 17.73 10.6
17:41 42 4125 236 98 152 52 19.4 17.67 11.2
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:42 42 4175 238 98 152 52 19.4 17.75 11.1
Bad Packet @ 0xDACF
17:42 44 4250 241 98 152 52 19.7 17.88 11.0
17:42 44 4250 242 98 152 52 19.7 18.07 11.0
17:42 45 4300 242 98 152 52 20.1 18.07 10.6
17:42 46 4350 243 98 152 52 20.1 18.36 11.1
17:42 46 4375 244 98 152 52 20.1 18.51 10.6
17:42 47 4375 244 98 152 52 19.7 18.51 10.9
17:42 48 4375 245 98 152 52 16.2 18.48 10.6
17:42 48 4375 245 98 152 52 16.2 18.48 10.7
17:42 49 4400 247 99 152 52 18.0 18.66 10.8
17:42 50 4425 248 100 152 52 18.0 18.72 10.6
17:42 50 4475 248 100 152 52 18.0 18.72 10.5
17:42 51 4500 249 100 152 52 19.0 18.92 10.4
17:42 52 4475 249 100 152 52 19.0 19.17 10.7
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:43 52 4550 249 100 152 52 19.0 19.17 10.6
17:43 53 4575 250 100 152 52 19.0 19.17 10.2
17:43 54 4600 250 100 152 52 19.4 19.17 10.6
17:43 54 4600 250 100 152 52 19.4 19.17 10.2
17:43 55 4600 250 100 152 52 19.4 19.17 10.4
17:43 56 4675 249 100 152 52 19.7 19.14 0.0
17:43 56 4675 248 100 152 52 19.7 19.21 11.1
17:43 57 4700 245 100 152 52 19.7 19.01 10.3
17:43 58 4750 244 100 152 52 19.7 19.04 11.3
17:43 58 4700 242 100 152 52 20.4 18.89 10.5
17:43 59 4675 241 100 152 52 20.4 18.43 0.0
17:43 60 4375 238 100 152 53 20.4 17.90 10.9
17:43 60 4100 237 100 152 53 21.1 17.38 12.3
17:43 60 3950 236 100 152 53 21.1 17.69 11.5
17:43 62 3850 234 100 152 53 21.1 17.56 11.1
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:44 62 3825 231 100 152 53 21.1 17.38 0.0
17:44 62 3800 230 100 152 53 21.1 17.38 10.7
17:44 63 3850 229 100 152 53 21.1 17.23 10.7
17:44 63 3850 227 100 152 53 21.1 17.09 11.1
17:44 64 3850 227 100 152 53 21.1 17.09 11.5
17:44 64 3775 225 100 152 53 21.1 17.09 12.8
17:44 64 3775 224 100 152 53 21.1 16.86 11.8
17:44 65 3775 224 100 152 53 21.1 16.86 10.7
17:44 65 3800 224 100 152 53 21.1 16.83 0.0
17:44 65 3850 224 100 152 53 21.1 16.50 10.4
17:44 66 3850 224 100 152 53 21.1 16.50 11.1
17:44 66 3875 224 100 152 53 21.1 16.86 11.8
17:44 67 3850 224 100 152 53 21.1 16.53 11.5
17:44 67 3875 225 100 152 53 21.1 16.66 11.1
17:44 67 3875 225 100 152 53 21.1 16.66 10.6
EngRn Mph Rpm KPa Tps CtsF MatF Spkf PW WB
17:45 68 3925 225 100 152 53 21.1 16.66 10.9
17:45 69 3950 227 100 150 53 21.1 17.00 10.5
17:45 69 3975 227 100 150 53 21.1 16.63 11.5
17:45 69 3975 227 98 150 54 21.1 16.63 12.0
17:45 70 3950 227 78 150 54 21.1 16.63 10.7
Let me bust out the quantum mechanics book here....j/k
I dont know for a fact that I have the stock pump. I do know that there is no hotwire kit, but I would imagine if the prior owner had half a brain, he would have thrown in a good pump to go with his ported heads, cam and TE-44. The car does look to have the thicker LT1 springs (they still look fresh with the paint line on them...engine supposedly only had 4000 miles when I bought it)), and the engine pulls hard to 6k. Ive got it running pretty rich right now. I rarely ever see anything below 800 O2's at 43 psi..its usually around 830ish, and I see no sign of the voltage dropping as i pull up to redline. I have to keep it rich with this crappy gas or I see alot of knock with just 10-12 psi. The car is nowhere near as fast as my cobra was when it was, even in N/A form (blown was ridiculous), but I do feel mad potential. That surge of torque when the turbo spools feels so awesome!
I have a walbro340 and hotwire kit coming from racetronix. Its the nicest system Ive seen IMHO.
Alky kit should be here sometime between now and the next millennia.
Translator coming.
Already have the intake tube, MAF, 50's and extender.
Is it even worth it to bother with the dutt neck?
I dont know for a fact that I have the stock pump. I do know that there is no hotwire kit, but I would imagine if the prior owner had half a brain, he would have thrown in a good pump to go with his ported heads, cam and TE-44. The car does look to have the thicker LT1 springs (they still look fresh with the paint line on them...engine supposedly only had 4000 miles when I bought it)), and the engine pulls hard to 6k. Ive got it running pretty rich right now. I rarely ever see anything below 800 O2's at 43 psi..its usually around 830ish, and I see no sign of the voltage dropping as i pull up to redline. I have to keep it rich with this crappy gas or I see alot of knock with just 10-12 psi. The car is nowhere near as fast as my cobra was when it was, even in N/A form (blown was ridiculous), but I do feel mad potential. That surge of torque when the turbo spools feels so awesome!
I have a walbro340 and hotwire kit coming from racetronix. Its the nicest system Ive seen IMHO.
Alky kit should be here sometime between now and the next millennia.
Translator coming.
Already have the intake tube, MAF, 50's and extender.
Is it even worth it to bother with the dutt neck?
Can be dangerous to assume much about what someone else did or didn't do.
800 while some consider an absolute, isn't. If your thinking about soing anything half serious get a Wide Band.
Anything you do to improve the air flow, and drop the temps of the air going thur the engine is a help. Thou, some are alot more cost effective then others. Some take an intial deep pocket, but are worth while, IMO.
Ductweiller neck is a good mod but you will later move to something better so dont waste your time, i can run 22 psi on 91 pump with alky injection with 0 KR and the 02's around 770/790 range it has been as high as 24psi with a TA60 but then i get about 2* of KR and the 02's drop below 750 (not good), I will tell you that 830 02's is a tad rich at WOT that maybe contributing to the knock that you are getting, get that new pump in there with the hotwire kit and all the new parts your going to get soon and stop trying to figure out what is wrong with the car now., your tune will completly change once you put in all the new parts and you will have to start all over again..
strikeeagle
New Member
- Joined
- Jun 6, 2001
My experience is it all sux, INCLUDING Sunoco 94, and I have NO idea why I waited so long to get a PAC kit from Razor...
strike
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