Horsepower after Full Bolt-Ons and a Tune?

Alstann · 04-08-2012, 12:28 AM

I had a friend ask me this question, and I couldn't really give him a good answer.

On average, how much horsepower and torque do our cars make on full bolt ons (Intake, Exhaust, HFC/TP/LT Headers) and a tune (probably Uprev)? Obviously, we can't just add the individual horsepower gains of each mod, it's gonna have diminishing returns.

370ZilverZ · 04-08-2012, 12:35 AM

These are the gains I made:

Gains
29.6 ft.lb.
44.2 HP

Alstann · 04-08-2012, 12:37 AM

Quote:

Originally Posted by 370ZilverZ

These are the gains I made:

Gains
29.6 ft.lb.
44.2 HP

Did that make your final whp around 325~ or so? i'm going off of what my baseline dyno number was.

370Z JT · 04-08-2012, 12:38 AM

My opinion, you're looking at +40 to 50hp gain after full bolt ons and tune.

370ZilverZ · 04-08-2012, 12:41 AM

Quote:

Originally Posted by Alstann

Did that make your final whp around 325~ or so? i'm going off of what my baseline dyno number was.

It depends on the dyno. I was on a Mustang dyno and WHP is 274.2, but my calculation would have been 325 on a dynojet, yes.

Alstann · 04-08-2012, 12:47 AM

Quote:

Originally Posted by 370Z JT

My opinion, you're looking at +40 to 50hp gain after full bolt ons and tune.

Those were the numbers that I was thinking. Which isn't bad for a N/A V6, in my opinion.

Quote:

Originally Posted by 370ZilverZ

It depends on the dyno. I was on a Mustang dyno and WHP is 274.2, but my calculation would have been 325 on a dynojet, yes.

Ah, I'm dumb. Your numbers were in your sig, haha. My personal dyno run was on a Dynojet. I got 286 hp and 243 tq. EDIT: Bone stock, that is.

SS_Firehawk · 04-08-2012, 03:06 AM

I would say 50-60whp I'm at 316 whp untuned. My baseline was 270

leighspped · 04-08-2012, 09:51 AM

Quote:

Originally Posted by SS_Firehawk

I would say 50-60whp I'm at 316 whp untuned. My baseline was 270

ZeeRedZ · 04-08-2012, 10:22 AM

Interesting question. So those of you that installed the bolt-ons, do you feel the Hp gain out-weighed the cost? What would you all say the cost was per Hp/Tq gain?

amrbasha · 04-08-2012, 11:21 AM

I noticed people on here saying whp what is whp? and why do you guys say its so low on your cars i thought the 370 does 332 horsepower? can anyone explain please

SS_Firehawk · 04-08-2012, 11:49 AM

It's the hp measured at the wheels by a dynometer. Advertised power is from the crank. When adding power, the best way to measure gains is to the wheels as this is much more feasable to do, and the most accurate. Boltons aren't the only way to improve whp; Wheel sizes, wheel weight, drivetrain changes such as flywheels, clutches, and rotor weight will change the reading to the wheels.

christian370z · 04-08-2012, 01:45 PM

The average seems to be roughly 40-50rwhp depending on the parts installed. That is very respectable for an NA V6 in my opinion.

Alstann · 04-08-2012, 11:14 PM

Thanks for the input guys. You're right, 40-50 whp gain on a N/A V6 are not too shabby.

LukasC · 04-09-2012, 11:14 AM

With just stillen g3 intakes and F.I. 18" resonators exhaust and an uprev tune im making 313.8rwhp on a dynojet

DarkJak · 04-09-2012, 01:39 PM

How much of a difference would LTH's add on top of all the other boltons? It seems like the most complicated upgrade, as well as one of the more expensive.

04-08-2012, 12:28 AM	#1 (permalink)
Alstann Track Member Join Date: Oct 2011 Location: South Florida Posts: 882 Drives: 12 PW 370z 6MT Sport Rep Power: 15	Horsepower after Full Bolt-Ons and a Tune? I had a friend ask me this question, and I couldn't really give him a good answer. On average, how much horsepower and torque do our cars make on full bolt ons (Intake, Exhaust, HFC/TP/LT Headers) and a tune (probably Uprev)? Obviously, we can't just add the individual horsepower gains of each mod, it's gonna have diminishing returns.

04-08-2012, 12:35 AM	#2 (permalink)
370ZilverZ A True Z Fanatic Join Date: Dec 2011 Location: DFW, TX Age: 67 Posts: 2,321 Drives: '11 BMW Z4 Rep Power: 19	These are the gains I made: Gains 29.6 ft.lb. 44.2 HP __________________ 370ZilverZ Journal BMW Z4

04-08-2012, 12:38 AM	#4 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 378	My opinion, you're looking at +40 to 50hp gain after full bolt ons and tune. __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal

04-08-2012, 03:06 AM	#7 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I would say 50-60whp I'm at 316 whp untuned. My baseline was 270 __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-08-2012, 11:49 AM	#11 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	It's the hp measured at the wheels by a dynometer. Advertised power is from the crank. When adding power, the best way to measure gains is to the wheels as this is much more feasable to do, and the most accurate. Boltons aren't the only way to improve whp; Wheel sizes, wheel weight, drivetrain changes such as flywheels, clutches, and rotor weight will change the reading to the wheels. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-08-2012, 10:22 AM	#9 (permalink)
ZeeRedZ Base Member Join Date: Mar 2011 Location: Texas Posts: 124 Drives: 370Z Rep Power: 14	Interesting question. So those of you that installed the bolt-ons, do you feel the Hp gain out-weighed the cost? What would you all say the cost was per Hp/Tq gain?

04-08-2012, 11:21 AM	#10 (permalink)
amrbasha Base Member Join Date: Mar 2012 Location: NWI Posts: 12 Drives: 10 370Z Black 6MT Rep Power: 13	I noticed people on here saying whp what is whp? and why do you guys say its so low on your cars i thought the 370 does 332 horsepower? can anyone explain please

04-08-2012, 01:45 PM	#12 (permalink)
christian370z A True Z Fanatic Join Date: Jul 2010 Location: Newport Beach Posts: 3,900 Drives: 2010 370Z/Saab 900se Rep Power: 432	The average seems to be roughly 40-50rwhp depending on the parts installed. That is very respectable for an NA V6 in my opinion. __________________ -320whp / 259wftlbs- SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

04-08-2012, 11:14 PM	#13 (permalink)
Alstann Track Member Join Date: Oct 2011 Location: South Florida Posts: 882 Drives: 12 PW 370z 6MT Sport Rep Power: 15	Thanks for the input guys. You're right, 40-50 whp gain on a N/A V6 are not too shabby. __________________ 2012 Pearl White 370Z GReddy Twin Turbo

04-09-2012, 11:14 AM	#14 (permalink)
LukasC Track Member Join Date: Apr 2011 Location: San Antonio, Tx Posts: 664 Drives: 11 Stillen SC Bl M6 Rep Power: 17	With just stillen g3 intakes and F.I. 18" resonators exhaust and an uprev tune im making 313.8rwhp on a dynojet Mothra108 likes this.

04-09-2012, 01:39 PM	#15 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,397 Drives: 2009 370Z Rep Power: 16804	How much of a difference would LTH's add on top of all the other boltons? It seems like the most complicated upgrade, as well as one of the more expensive.

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