JBs93FD

list of mods so far



aem ems

custom 3'' mandral dp made by me

custom 3" mid pipe made by me

greddy ti race cat back

duel 2 1\2 " custom intakes

fluidine

hks ssqv

uego wide band



i plan to build a street\drag car with a gt 28 or 35 i just want the fuel there for when that time comes, and to max out these pos twins.

herblenny

So are you still running stock intercooler?



If so, I think you might be ok with stock injectors and run upto 13-14lbs of boost.

I think you could reasonably max out the stock injectors to about mid 300RWHP. If you want to hit close to 400, get some 850s for the primary (all 850s) or could get bored out 1200-1300 for secondary and 850's for primary.. but 400 on stock turbos will be quite hard task to do. Its max is upper 300s and very very few have ever made 400 with stockers.. and hitting upper 300s with seq. system is even harder task.



But ultimately, you want to talk to your boss or just play around and see. I'm sure you and your boss are well trained tuners. So, you probably know more than I about tuning. I think it just takes time to get large inj. tune correctly. good luck!

FikseRxSeven

i would be very careful with your setup. you have almost no restriction in your exhaust system, even your catback is very high flow. upgrade your fuel system and tune for higher boost asap before your car suddenly spikes and run out of fuel.

JBs93FD

I have been running 13-14 pounds for about six months now and had no problems, it spikes to 14 and drops to 13 until redline, I know my injectors are maxed out and are going to fail soon but its not a daily driver i take it out on the weekends. thats why im buying a fuel system now. aem has made it possible to run that kind of boost safe and i have ignition\fuel cut setup for that reason. i plan to see how much i can push out of stock twins since i have two sets, once i do that im going single gt 28 or 35! and i am running stock intercooler right now my intake tems are around 170 during the day at night they drop to 45 and at the most get up to 110, my plan is to get a front mount before trying to max out the twins.



If anyone has an extra front mount and want to trade for a plx 300, fd tranny with 45,000 with a going 5th syncro or stock twins with manifold let me know!

FikseRxSeven

be careful maxing out your twins, they create an excessive amount of heat at high boost your motor might go before you're able to use that second set of turbos

herblenny

if you want to upgrade your injectors.. then I would just get some 1200's and use your 850s in primary. That should be plenty.



Also, I need to make corrections.. My previous post, I asked if you had stock IC and if you did, you are ok to run 13-14lbs.. I meant if you had aftermarket IC..



Like Martin pointed out, excessive boost on stock twins will only heat up the turbos, in return heat up the air. High intake temp will only lead to detonation. So, I would watch out.



Also, FMIC you'll have issues with cooling system. So, make sure to do some research about it before deciding on FMIC.. I have one on one of my FD and I had hard time keeping the engine cool. Good luck!

black93fd

when you said some people got 400hp on the twins I assume you didn't mean the efini twins also what kind of port where they running and was that on pump gas? I have never heard of numbers that high on stock twins. Not that it is impossible I just have to wonder what hurdles they had to cross to get those hp figures.

herblenny

People have ran 400WRHP on stock twins. Do I believe them, yes! But stock twins will not last long.



You also need to be more specific when you say "efini"... Because, efini is Mazda RX7s. and its turbo is no different from our stock twins.

black93fd

okay as far as being more specific I meant the 99-02 model the turbocharger where upgraded at least thats what steve kahn said about it.



Mazda Efini twin turbochargers for 93-95 Rx7 $2,595.00







Click to enlarge

Mazda continued producing the RX-7 and developing the platform until 2002. One of the best updates was the power change for the 1999-2002 models. The key to this power change was the improvements to the turbochargers. The compressors received special abradable housings to improve impeller blade clearances, turbine housings are are roomier and connections were improved for better reliability. The sum total of all these changes were a faster responding turbo, better efficiency and higher boost capability. In other words, more power! For many years, only a select few could find these turbos. These turbos are brand new. There are no used or rebuilt parts. Also included are two new actuators for the wastegate and pre-control. Can be used in either the preferred sequential setup or in a racing non-sequential format. These turbos will bolt directly to any 1993-1995 exhaust manifold and any quality downpipe. We have seen as much as 385HP to the ground, but see 330 - 350 frequently. Whether youre replacing your turbos due to old age or feel the need for speed, there is no better value than the Efini twins turbochargers

black93fd

http://www.gothamracing.com/catalog/produc...roducts_id=1117