How much hp do you think my 951 is putting out?
08-16-2008, 07:22 PM
#1
Race Car
Thread Starter
How much hp do you think my 951 is putting out?
look at my mods in my signature and give me an estimate of the hp and torque
the hp in my signature is just a guess, so how much horsepower and torque do you think it has. It is running 1.75 bar (25 psi)
thanks
ps. I don't have the time and money to dyno my 951 right now, but it is on the to do list
the hp in my signature is just a guess, so how much horsepower and torque do you think it has. It is running 1.75 bar (25 psi)
thanks
ps. I don't have the time and money to dyno my 951 right now, but it is on the to do list
08-16-2008, 07:28 PM
#2
Rennlist Member
Why are you running such high boost? What are you using to measure that boost level? What fuel are you using? Assuming you've got a K26/8 you would think that it runs out of puff past a certain psi level.
08-16-2008, 07:38 PM
#3
Race Car
Thread Starter
the PO said it was running 1.75 bar and got a 0- 60 time of 4.62 and a 1/4 mile of 12.65 at the track. It has a K26-6 turbo. I use premium, but I think It is running lean and needs a 3 bar fuel pressure regulator, because it should perform better than it is. I mean its still fast as hell, but I feel something is holding it back!
08-16-2008, 07:43 PM
#5
Your turbo!
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
08-16-2008, 07:50 PM
#6
Race Car
Thread Starter
what PO Said > YES, THE WATERPUMP, IDLER BEARINGS AND TIMING BELTS HAVE BEEN DONE.
THE CAR SPINS BOTH REAR TIRES, SO MUST HAVE LSD
THE TURBO CAN BE SHIMMED FOR 10 PSI MORE BOOST AND 70 MORE HP.
THE CAR AT GATEWAY 2 YEARS AGO DID 0-60 IN 4.62 AND 12.657 QUARTER
WITH BOOST SET AT 1.75 BAR, WITH SMALLER TIRES THAN WERE INSTALLED WHEN I SOLD IT.
KEEP OIL CHANGED, BRAKES , TRANS OIL AND FILTERS CHECKED AND CAR WILL LAST.
not sure of what kind of injectors, but I do believe it is running lean
THE CAR SPINS BOTH REAR TIRES, SO MUST HAVE LSD
THE TURBO CAN BE SHIMMED FOR 10 PSI MORE BOOST AND 70 MORE HP.
THE CAR AT GATEWAY 2 YEARS AGO DID 0-60 IN 4.62 AND 12.657 QUARTER
WITH BOOST SET AT 1.75 BAR, WITH SMALLER TIRES THAN WERE INSTALLED WHEN I SOLD IT.
KEEP OIL CHANGED, BRAKES , TRANS OIL AND FILTERS CHECKED AND CAR WILL LAST.
not sure of what kind of injectors, but I do believe it is running lean
08-16-2008, 07:51 PM
#7
Race Car
Thread Starter
Your turbo!
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
also, what would be a good turbo for my car
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08-16-2008, 07:55 PM
#8
Turbo choice will boil down to your own personal tastes. There are tons of choices out there that will either give you higher top end with more lag or less lag but choke a little more up top (and countless other variations).
You will need to get new chips whenever you change the turbo. The current chips are mapped for whatever you're running and throwing in a different blower can definitely throw wrenches into things.
Do you have any kind of gauge in the car for reading boost? (other than the stock tach gauge?) What about AFR monitoring? What makes you think it's running lean?
I'm guessing you have autothority hardware and chips.
08-16-2008, 08:03 PM
#9
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Your turbo!
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
If you're pushing 25 psi with a 26/6 you're pretty much blowing hot air(someone correct me if I'm wrong, but 25psi is WAAAAAAAAAY out of the efficiency range for that unit). If you're referencing your factory boost gauge, then you're actually only boosting .75 bar (the factory gauge adds in ambient pressure as well so at sea level if you turn the key on, it'll show 1 bar). Do you have another way of monitoring your boost? AFR? I doubt you're over 300.
My car has a SciVision MAF, 3bar FPR, 55lb injectors, SFR stg 1 headers, xover, 3" test pipe, cat delete, cat back, XR-1, MBC set to 16 and I'm pretty sure I'm not over 300.
Please describe your "Porsche high flow injectors"
What Stg II MAF/intake are you running?
What's a "dfe"?
08-16-2008, 08:04 PM
#11
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08-16-2008, 08:09 PM
#12
Nordschleife Master
Well you need to figure out how much boost your car is really making. If your reading off the factory gauge where 1 bar is atmospheric, then your really only running about .75 bar which is around 11psi. And at 11psi, you are not making much more than stock boost. Other than the MAF, your car is relatively stock so i doubt you are making much more than 220whp.
For comparison sake, my car made 263hp/264ft-lbs at the wheels with a K26/6 at 14psi, full 3'' exhaust with no cat, Tial 38mm wastegate, LR stage 1 head, 72# injectors, Vitesse MAF and a few other small things.
Your best bet is to dyno your car.. this way you get accurate numbers and will have an idea what the AFR's look like.
For comparison sake, my car made 263hp/264ft-lbs at the wheels with a K26/6 at 14psi, full 3'' exhaust with no cat, Tial 38mm wastegate, LR stage 1 head, 72# injectors, Vitesse MAF and a few other small things.
Your best bet is to dyno your car.. this way you get accurate numbers and will have an idea what the AFR's look like.
08-16-2008, 08:13 PM
#13
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what PO Said > YES, THE WATERPUMP, IDLER BEARINGS AND TIMING BELTS HAVE BEEN DONE.
THE CAR SPINS BOTH REAR TIRES, SO MUST HAVE LSD
THE TURBO CAN BE SHIMMED FOR 10 PSI MORE BOOST AND 70 MORE HP.
THE CAR AT GATEWAY 2 YEARS AGO DID 0-60 IN 4.62 AND 12.657 QUARTER
WITH BOOST SET AT 1.75 BAR, WITH SMALLER TIRES THAN WERE INSTALLED WHEN I SOLD IT.
KEEP OIL CHANGED, BRAKES , TRANS OIL AND FILTERS CHECKED AND CAR WILL LAST.
not sure of what kind of injectors, but I do believe it is running lean
THE CAR SPINS BOTH REAR TIRES, SO MUST HAVE LSD
THE TURBO CAN BE SHIMMED FOR 10 PSI MORE BOOST AND 70 MORE HP.
THE CAR AT GATEWAY 2 YEARS AGO DID 0-60 IN 4.62 AND 12.657 QUARTER
WITH BOOST SET AT 1.75 BAR, WITH SMALLER TIRES THAN WERE INSTALLED WHEN I SOLD IT.
KEEP OIL CHANGED, BRAKES , TRANS OIL AND FILTERS CHECKED AND CAR WILL LAST.
not sure of what kind of injectors, but I do believe it is running lean
ALL 951's spin the tires, under boost.
How is the boost being set? Is there a manual or electronic boost controller?
If not, Darwin is right. The stock guage has to be read as X bar minus 1 bar.
So that's .75 bar, IF the guage is marginally close. It usually isn't.
If there is no boost controller, you are fine. You aren't actually running 1.75 bar.
If it's running lean, be very careful, BUT how in the world would you know that without an accurate WBO2 set up?
You're chip may be fine for what you have now...maybe, but if you change turbos, you need to make serious changes to supporting systems and measurement devices.
At minimum I'd add a 3 Bar FPR, Boost Controller, WBO2, and a reliable method of controlling your fuel.
Other than exhaust and suspension, there is no such thing as a bolt on turbo upgrade...atleast not for long.
