HP question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s13goldie · 01-17-2009, 08:51 PM

hey everyone i was hoping someone could help me here. or at least give me some kind of estimation or an idea on how much hp gain i could be running with. i currently have an s14 silvia running with a stock s14a motor with vtc.
entire motor is stock with stock turbo and stock bov.
the only mods i have is:

greddy fmic
greddy suction kit
greddy underdrive pulleys
tomei exhaust manifold
tomei turbo elbow
3'' steel down pipe
3'' cat
hks catback exhaust
nismo 550 injectors
z32 maf
apexi afc
hks 2.0 mm steel head gasket
12psi
competition clutch stage 5 preasure plate
4 puck sprung clutch
lightened flywheel

i know its a noob question and im well aware in order to know i need to go to a dyno. but until then i could use an idea. thanks everyone.

alzahakar · 01-18-2009, 12:58 AM

That's all highly dependent on your tune. It's really hard to estimate. If you didn't get the car dyno tuned, you probably should. If you just threw on that apexi SAFC, then you are likely running just a base map and could be running outside of the optimal A/F ratio and making less power than you could. Get a dyno tune, that will tell you how much HP you have and will likely make the car run stronger too.

Monooxide · 01-18-2009, 11:59 AM

I made 273 WHP on bolt-ons and 13 PSI on all factoy A/F Management.

A Friend made 281ish on a SAFC NEO, 440s and 18 PSI.

Both S14 SRs.

s13goldie · 01-18-2009, 05:15 PM

thanks guys i def. appreciate it. when i started my build i wanted to have a fun car with out sacrificing comfort. 270 sounds about right. when i went to design the set up i wanted response no matter what. with the manifold and elbow there is no boost lag and it jumps with every shift. i put a steel head gasket to prolong the life by lowering compression and from the head down to the turbo and elbow all steel gaskets. underdrive pulleys to lighten the load. so basically i want the car to be fun and last me cause it is a daily driver. but 270 for a street car isnt bad and your right i need it tuned. thanks for your input guys.

01-17-2009, 08:51 PM	#1
s13goldie Join Date: Apr 2005 Location: Florida Age: 36 Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	HP question hey everyone i was hoping someone could help me here. or at least give me some kind of estimation or an idea on how much hp gain i could be running with. i currently have an s14 silvia running with a stock s14a motor with vtc. entire motor is stock with stock turbo and stock bov. the only mods i have is: greddy fmic greddy suction kit greddy underdrive pulleys tomei exhaust manifold tomei turbo elbow 3'' steel down pipe 3'' cat hks catback exhaust nismo 550 injectors z32 maf apexi afc hks 2.0 mm steel head gasket 12psi competition clutch stage 5 preasure plate 4 puck sprung clutch lightened flywheel i know its a noob question and im well aware in order to know i need to go to a dyno. but until then i could use an idea. thanks everyone.

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01-18-2009, 12:58 AM	#2
alzahakar Zilvia Member Join Date: Aug 2008 Location: San Antonio, TX Age: 39 Posts: 196 Trader Rating: (4) Feedback Score: 4 reviews	That's all highly dependent on your tune. It's really hard to estimate. If you didn't get the car dyno tuned, you probably should. If you just threw on that apexi SAFC, then you are likely running just a base map and could be running outside of the optimal A/F ratio and making less power than you could. Get a dyno tune, that will tell you how much HP you have and will likely make the car run stronger too.

01-18-2009, 11:59 AM	#3
Monooxide Zilvia Addict Join Date: Mar 2005 Location: Farmington/Flint, MI Age: 33 Posts: 675 Trader Rating: (8) Feedback Score: 8 reviews	I made 273 WHP on bolt-ons and 13 PSI on all factoy A/F Management. A Friend made 281ish on a SAFC NEO, 440s and 18 PSI. Both S14 SRs.

01-18-2009, 05:15 PM	#4
s13goldie Join Date: Apr 2005 Location: Florida Age: 36 Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys i def. appreciate it. when i started my build i wanted to have a fun car with out sacrificing comfort. 270 sounds about right. when i went to design the set up i wanted response no matter what. with the manifold and elbow there is no boost lag and it jumps with every shift. i put a steel head gasket to prolong the life by lowering compression and from the head down to the turbo and elbow all steel gaskets. underdrive pulleys to lighten the load. so basically i want the car to be fun and last me cause it is a daily driver. but 270 for a street car isnt bad and your right i need it tuned. thanks for your input guys.