dan03mach

iTrader: (1)

I went up to Gearheads Performance the other day to shoot the **** with the guys up there and one of the customers up there was heating up his bottle and one of the guys up there said him and I should race. So we went down to the hwy and started off at around a 55mph pump. He took the hit and instantly put a car length on me do to my slow reaction, but when I did hit it I got almost sideways but drove thru it and played catch-up and passed him by middle of 3rd and then shut it down half way thru 4th with about 2+ cars on him. His car dyno'd around 540rwhp and I was on 13-14lbs of boost. Not too sure what hp level that is. After the race he was going to go top the bottle off and we were going to run again but never go a chance to. I'm sure round 2 will be later on.

ponygt65

Very Nice Dan.

Sticks n Stones

FI guys: am I right about the doubling of power in the 12-13psi range versus N/A? I heard that in regards to a supercharged GTO; and spoken from a guy who sounded like he knew his **** and who did some quick math on my PDA: just dont know if it was that specific setup or all FI setups that double rwhp at that psi range.

IF thats the case: OP nice kill, sounds like you got him beat by at least 100rwhp, minimum, to come from behind & spin & put multiple cars on him. 13-14psi should roughly double your rwhp compared to N/A: was your car a 325-350rwhp setup before the turbo?

ponygt65

nope..that's wrong. power in relation to psi varies greatly. Namely CR and CFM of head unit.

ProjectDuStU

iTrader: (4)

What a turd... Dan get a real car... haha jk

unit213

Good kill.

<------- turbo envy

06 6.0 GTO

Turboed Mach 1....sick car and good kill!

WhitePhoenix99

iTrader: (12)

Needs more video!

jobuhoohoos

hey DuStu, can we get a larger version of that pic under your screen name?

Ke^in

I've always been a fan of the Mach1 over a Termi. I realize the latter is a over all better car, But I like a live rear axle better than the IRS, and I think the Mach1 looks better. I am not a fan of the Mach1's wheels though, I'd love to have a 03/04 black Mach1. I was going to get one, but I couldn't find one with low mile and a decent price that wasn't run the **** out of.

ScreaminRedZ

iTrader: (3)

Great kill! Do you have any numbers on your car for any other boost levels?

unit213

What size turbo are you running again? 76?

Killemall

Actually..All cars are differant but we have some general rules that for the most part are true across the board "on average"

-general rule #1...100 pounds less weight is 1 tenth faster in the 1/4 mile

-general rule #2...10 rwhp gained on the dyno is 1 tenth faster in the 1/4 mile

-general rule #3 appendix B...14.7 psi or "1 bar" will double your rwhp before boost was applied...

Good example is a stock 300 rwhp camaro......If you could get the engine to safely hold 14.7 psi or "1 bar" the camaro would be a 600 rwhp beaste...

Unfortunetly the engine will most likely detonate and blow at 14.7 psi so most go with a 7 pound pully or (.5 bar) that will now have this camaro dyno 450 rwhp....


This is why you see a lil baby 150 rwhp engined civic add 14 psi of boost and still only dyno 300 rwhp.....Or a 400 rwhp 1996 Viper add only 7 pounds of boost and dyno 600 rwhp...

General rule 3 appendix B stays pretty consistant across the board

unit213

That's flat out wrong. It might apply to stock cars (doubt it), but it gets significantly more difficult to gain ET as a car becomes quicker. For example, a car that runs 6.50 in the 1/4 will absolutely not pick up 1 tenth for each 10rwhp gained! In that scenario, it already takes roughly 2,500hp to run a 6.50...assuming a 2,800lb car or so. 10rwhp will literally do nothing in that application.

By the way, Pony is absolutely correct. Your post had nothing to do with his so I'm not sure why you quoted him.
Try running 15psi through a 114mm turbo with a billet wheel or 15psi through a 61mm turbo and you'll understand
his point.

boostd4

Wow, those rules are total crap.

I remember when i was a teenager and bought into that crap. ...and it was true to some extent, but it only applied to SLOW cars.

How WHP affects your ET is ruled by the car's WEIGHT (and for super-duper fast cars, DRAG).

Add 10whp to 1600lb stripped CRX, then add 10rwhp to a 6000lb diesel truck and see what happens.

The sad thing is that those crappy rules seem to ring true when you're talking about 3200-3800lb 13.0-16.0s cars (the vast majority of cars in stock or near-stock condition), so all the slow guys quote them.

unit213

What do you mean by detonate? Are you talking about spark knock or are you talking detonation as in explode like a bomb? It has much less to do with detonation and more to do with the weak internals of the LS1 (i.e rod bolts). Pour enough octane in the tank and you're not going to see detonation.

...and we're talking turbos here. What's this "7 pound pulley" you're talking about?

dan03mach

iTrader: (1)

Yeah a turbonetics T76

dan03mach

iTrader: (1)

12lbs 576rwhp
16-17lbs 679rwhp
18lbs 695rwhp
19lbs 714rwhp
20-21lbs 750rwhp

All runs were very fat with the a/f like around 10.0:1 and only 17 degrees of timing. All those pulls were pretty much done back to back too with no cool down time.

chavez885

iTrader: (12)

lmao....beat me to it. Crashemall has no clue about turbo setups and lmfao @ his 3 rules. You can't say "15psi" makes X power, there are different size turbos buddy....wow..

dan03mach

iTrader: (1)

You asked what kind of power my car makes at 15psi, well I just dyno'd it today on pump gas at 15psi and this is what it put down.