Easiest way to 300 crank hp.........
07-28-2010, 12:29 PM
#27
*A properly tuned and supported 2.8 car should make more around 270-275whp.
07-28-2010, 12:46 PM
#29
IDK if hes gonna hit his goal
You need at least 275-276 WHP to make 300 BHP
Last edited by Godly; 07-28-2010 at 12:46 PM. Reason: Automerged Doublepost
07-28-2010, 12:54 PM
#31
No one can really say what the exact whp number would be to make 300 bhp. To figure it out correctly you would need the exact % of driveline loss from a Cobalt SS/SC. Considering no one really knows that number it's safe to say no one is correct including me. In the end shoot for whp numbers, those are the ones that count !
Haha, nope
Last edited by Staged07SS; 07-28-2010 at 12:56 PM. Reason: Automerged Doublepost
07-28-2010, 01:17 PM
#33
Senior Member
I believe the drivetrain loss on the Cobalt is closer to 12%-13%.
07-28-2010, 01:19 PM
#35
With your numbers you are saying that the SS/SC sees less than 10% driveline loss. I dont think so.
No one can really say what the exact whp number would be to make 300 bhp. To figure it out correctly you would need the exact % of driveline loss from a Cobalt SS/SC. Considering no one really knows that number it's safe to say no one is correct including me. In the end shoot for whp numbers, those are the ones that count !
Haha, nope
No one can really say what the exact whp number would be to make 300 bhp. To figure it out correctly you would need the exact % of driveline loss from a Cobalt SS/SC. Considering no one really knows that number it's safe to say no one is correct including me. In the end shoot for whp numbers, those are the ones that count !
Haha, nope
Its not exactly right but thats the estimated least amount of driveline loss in most FWD cars.
X=BHP .08 = Driveline Loss and Z = BHP x Driveline Loss
07-28-2010, 01:26 PM
#36
I doubt he is anywhere near 250whp with those mods. 240whp, maybe 245whp tops. Without exhaust it is going to be next to impossible to push enough air through to get to the 265whp needed to be at or around 300bhp. I don't think you are going to be pushing enough air with a 2.9 to reach power levels near 265whp either. Even if you did, by some chance, get enough airflow with a 2.9 to reach 265whp, the 42# injectors would be going static or you would have to be running pretty lean. All the cars that I have seen reach around 265whp+ have been 2.8 + 60#'s at least, with exhaust and headers.
I believe the drivetrain loss on the Cobalt is closer to 12%-13%.
I believe the drivetrain loss on the Cobalt is closer to 12%-13%.
I made 256whp on a 2.99 pulley last fall, but I did have exhaust mods. So a 2.9 def. pushes enough air to produce 250whp+. Actually a guy on here made 291whp with a 2.9 pulley, but he had a hell of a lot more mods than the OP.
People think 42's cant handle much, but they actually can when the tune is setup correctly.
Once again 265whp is just a number you are stating that is needed for 300bhp, when in reality no one really knows what it is. I'm not saying youre wrong, but it's really a guessing game unless we know the exact driveline loss of a SS/SC.
07-28-2010, 03:05 PM
#37
i remember in 06 when 300 whp was reached on a 2.5 and 42lbs injectors with a safc and a maft and stupid idc and we had to make our own injector harnes and it was long before hptuners hab balt support dynos arent an absolute in the numbers a car produces at the wheels it is more of a tuning tool then anything you all are getting to hung up on numbers in the end what matters is a time slip and who sees your tail lights
Last edited by mrbelvedere; 07-28-2010 at 03:05 PM. Reason: Automerged Doublepost
07-28-2010, 03:08 PM
#38
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your interceptor is lying to you
i remember in 06 when 300 whp was reached on a 2.5 and 42lbs injectors with a safc and a maft and stupid idc and we had to make our own injector harnes and it was long before hptuners hab balt support dynos arent an absolute in the numbers a car produces at the wheels it is more of a tuning tool then anything you all are getting to hung up on numbers in the end what matters is a time slip and who sees your tail lights
i remember in 06 when 300 whp was reached on a 2.5 and 42lbs injectors with a safc and a maft and stupid idc and we had to make our own injector harnes and it was long before hptuners hab balt support dynos arent an absolute in the numbers a car produces at the wheels it is more of a tuning tool then anything you all are getting to hung up on numbers in the end what matters is a time slip and who sees your tail lights
Well said, Belvedere!
07-28-2010, 03:19 PM
#39
your interceptor is lying to you
i remember in 06 when 300 whp was reached on a 2.5 and 42lbs injectors with a safc and a maft and stupid idc and we had to make our own injector harnes and it was long before hptuners hab balt support dynos arent an absolute in the numbers a car produces at the wheels it is more of a tuning tool then anything you all are getting to hung up on numbers in the end what matters is a time slip and who sees your tail lights
I was simply giving an example. That is all.
I'm far from being caught up on numbers. I dyno'd last fall to get an idea of what I was making, and prob. will never dyno again. I know my car is making a lot more power than it used to, and that's all that matters to me. If it puts a smile on my face when I pull onto the highway, or wins the occasional stop light to stop light race I'm happy enough with the power. I don't need a dyno sheet for that
07-28-2010, 05:16 PM
#41
There is an adjustment on the HP parameter. Mine is set at 1.00 which means there is no adjustment. It's the raw out put number calculated. If it's set at say 1.05 it adds 5% to the number it calculates. Check to see what yours is set at (even though I'm sure you don't care). Aeroforce and others I've spoken to on their forum said they came pretty close to their actual power output. To get the most accurate number from the HP parameter they claim you need to know the MAF value of your car.
07-28-2010, 06:26 PM
#44
Not a single setup mentioned in here on 91-93 octane + meth will even come close to 300whp.
The 2.5 pulley and 42s is lulz... All they had back then tho, what can you do... :/
You guys need to look beyond the basic bolt-ons if you wanna hit 300+ whp on a m62 w/o nitrous on pump gas and meth.
It's literally a ticking time bomb if your not on e-85 trying to achieve this on a m62
The 2.5 pulley and 42s is lulz... All they had back then tho, what can you do... :/
You guys need to look beyond the basic bolt-ons if you wanna hit 300+ whp on a m62 w/o nitrous on pump gas and meth.
It's literally a ticking time bomb if your not on e-85 trying to achieve this on a m62
07-28-2010, 06:28 PM
#45
Who said anything about Stage 2 = 300hp ??
This thread isnt about hitting 300 WHP it's about hitting 300 BHP. That's what OP was asking.
Not a single setup mentioned in here on 91-93 octane + meth will even come close to 300whp.
The 2.5 pulley and 42s is lulz... All they had back then tho, what can you do... :/
You guys need to look beyond the basic bolt-ons if you wanna hit 300+ whp on a m62 w/o nitrous on pump gas and meth.
The 2.5 pulley and 42s is lulz... All they had back then tho, what can you do... :/
You guys need to look beyond the basic bolt-ons if you wanna hit 300+ whp on a m62 w/o nitrous on pump gas and meth.
Last edited by Staged07SS; 07-28-2010 at 06:44 PM. Reason: Automerged Doublepost