300zx tt mods

[bigbumpinZ]

i finally bought a 300zx TT 1992. i paid 4000 for it. its got an aftermarket exhaust, headers, intake, test pipes, and its been tuned. how many horses should i be around and what else should i do?

[A Paratroopers 300zx]

Well it depends... When you say "headers" those are usually for an NA. I'm sure you mean exhaust manifolds. I would look into exactly what you have on your car. Brands and sizes, etc... Tuned can mean a lot of things. Find out what boost you are running and how it was upgraded (boost jets, MBC or an EBC.) You could always dyno it too. I would guess around 320-340rwhp with info provided.

[bigbumpinZ]

my apology ive been building an NA for the past year so headers just came out, i mean exhaust manifolds. it has 14lb boost jets, stock psi, greddy exhaust, N1 exhaust tips, K&N intake. its been tuned by Z1 im planning on changing the injectors to nismo 550's so i can run higher boost probably around 15 psi.

[vulcanrush]

it has 14lb boost jets, stock psi

stock turbos, you mean?
stock psi = 9-psi

[bigbumpinZ]

ya stock turbos

[bigbumpinZ]

bump

[marty1mc]

Hate to see you sitting out here all by yourself. I think Paratroopers gave you a decent estimate on power with the mods you have listed. First, upgrade to at minimum 615cc (new style 550cc injectors flow 615) or 740cc, not old style 550cc injectors. The old style fail way too often. You will need an ECU upgrade to do it. Get a boost controller after that and scrap the stock setup solenoids and boost jets.

From that point forward depends on how much you have to spend.

EDIT: Cart before the horse. I hope you have already checked that all of the required maintenance has been performed (timing belt, etc). If not, that's step one.

[bigbumpinZ]

thanks for the info, ive got the chip for the 550 injectors, the guy gave it to me with some new injectors. one of my buddies is running manual boost controllers im still planning on a electric one just didn't know how well they worked. im hoping to put up decent numbers with this set up i probably will only run about 12psi for a few then bump it up to around 16 or 17psi once the injectors are changed