DyNaMiTe KiD

Wsup..

Summers just around the corner now here in manitoba. just wanted to know what other mods do i need to achive 300 rwhp for this summer.

so far... i got the following for 1990 turbo rx7

apex avc-r
apex afc
780 cc secondaires
hks b.o.v
20b fuel pump
8.5 msd wires.
stock intercooler
airinx intake
rb turbo back exhaust

no gauges at the momment....but soon to be coming..

thanks..

Grimlock

a 50 shot of nos!!

you would proly have to get a front mount i/c and bigger turbo if you skipped on the nos.

a 50 shot would most likely do it. wont hurt the motor either, if done right. you have a gtx turbo right. go for the nos!!!!

vaughnc

DyNaMiTe KiD,

For 300 rwhp you'd need stage I, II, and III upgrades.

You can go carbed or stay fuel injected on these as well.

For fuel injection:

You need to run an aftermarket ECU to control boost, fuel deliver, air/fuel maps, etc.. Haltech is a popular choice.

I've heard the stock turbo can support 300hp @ 12psi (with fuel upgrades of course), but it's always better to upgrade to a larger turbo so you don't have to run so much boost.

Basically - Gagues (VERY IMPORTANT) including air/fuel, boost, exhaust temp, and coolant; ECU, larger fuel injectors, upgraded fuel rails, upgraded fuel pump, stronger clutch, downpipe & performance catalytic converter

That's the basic list. Most people also upgrade their air intake including intake, cold air box, fresh air headlight scoop intake (check mariahmotorsports.com for those); free-er flowing exhaust, better ignition, front mount or larger top mount intercooler, larger turbo, and possibly a mild street port for better efficency at the newer HP & boost levels.

That should provide the most reliability at those HP/torque levels.

Note the stock fuel system maxes at about 220-240rwhp @ 12PSI. Many people just buy devices to fool the OEM computer into providing additional boost & fuel delivery. At 12PSI on the stock turbo, I've heard above 5500 rpms you tend to run lean - so you'd definitly want to watch those aftermarket gagues.

-- vaughnc

DyNaMiTe KiD

well my conclusion is that im goin to get the 50 shot wet nos system.. but before i do, im going to get a air fuel and egt gauge and some minor gauges.. sorry but i forgot to mention i have a boost gauge.


so 50 shot is safe for ma car??cuz if it is i'll look into buying it with in the next few weeks..thanks..

go_speed_go

https://www.rx7club.com/forum/showth...threadid=40805

Grimlock

there's a guy on this forum by the name of koko who has a 50 shot on his 87 TII, he gets mad boost creep when he has his nos on. he said he gets 15 psi instantly. you have a gtx turbo/manifold, should work better as the wastegate design is better. kinda dangerous if you dont got the proper mods though. a wet system is what you want to get. research it!!

koko has been banned for a week by a moderator. do a search in the forum on nos and see what everyone else has done.

Josepi

Upgrade or replace the stock turbo. Sell both AFC and ACV and go full ECU.

DyNaMiTe KiD

well, thanks for the info guys and that thread link helped me out alot.. i appreciate it... but i made ma decesion to go with the 50 shot nos.. and yes i'll make sure i have the proper mods.. engine only has 6000 km's on it neways.. so not worried..

ADIOS!!

vaughnc

Yeah NOS is great for the track so long as you don't run lean & avoid the dreaded pinging.

If you want 300rwHP full time though, eventually you'll want to move away from NOS. Getting the ECU first will even help with your NOS situaition as well since it can controll delivery & mixtures.

DyNaMiTe KiD

well.. im just thinking of what vaugnc just told me.. my main concern is i dont have the money to go full ecu.. i dont think i'll ever will though because i still want the street driveability and reliability , i just like drivin the rx around. sometimes like to have fun n stuff.. and once i hit about 300 rwhp or a lil less, thats all the mods the engines gettin besides pulleys and a ignition box..

so my question is from what my situation is, do i really need to go full ecu??

vaughnc

Hmm...

I'd do a little R&D on a NOS setup on OEM TIIs. I'm sure it's been covered plenty on this forum and other sites.

Anyone have a good link?

DyNaMiTe KiD

well off to my mission i go... thanks for the help... i'll reply bout the results in a few months......

ChEeRs