cartervs

Hey Art Guy, 58degrees and very sunny here in nor Calif...Carter

Marshall

You eliminate 2 fairly large restrictions. One in the exhaust manifold (flapper door) and one in the turbo housing (precontrol).

kwikrx7

Seems that if you want more power then it's best to go non-seq (full) I was full non-seq before and there is a difference in flow with removing the flapper door and precontrol. If I were doing constant 1/4 mile runs or even runs on the highway I would definitely choose non-seq for a better midrange power.

I am like artguy and do not like non-seq as it is basically meant for racing so I switched back to seq. It is much more fun to drive around in town and carving up mountain roads. And it still gives me enough power in the mid-high range to pull on high-hp V8s. I think full non-seq might yield some more power up, but only 10 hp at the most and there really isn't much proof to prove that.

apneablue

thanks for clearning that up...(finally somebody helped a brotha out) Seeing that there isn't that much gain compared to seq i think I will stay with seq...I really like feeling the 2nd turbo hit.

Qball

333rwhp 13psi unported wastegate.. non ported motor.. 99 specs

homie

Qball, that's the most I've ever heard. Not that I don't believe you, but do you have a dyno to back that up? It seems you're able to get more power than anyone else. 13 psi is very conservative. What have you done to that monster???

Marshall

Homie, those numbers look pretty normal to me. With all bolt ons and 13 psi, you can expect 330-340 on a good running car.

homie

Oh, that's with upgraded turbos right?

Marshall

Nope, stockers will do it.

SPOautos

Yea, that 333@13psi is pretty normal numbers for stock turbos/stock porting with good engine and turbos

boost-in-rx7s93

I planned on running the stock turbos rebuilt with a rebuilt motor 2 peice 2mm seals and a street port with a intake and a three inch downpipe of some make. does anyone have a sugestion for this settup? I am also planning to run 15 to 17 psi after intake and piggy-back savc-r is tuned! does anyone have a prediction on rwhp?

thanks joe,

rynberg

Rebuilt stock turbos will melt at 15-17 psi. Ask Artguy.

BTW, you can't use an S-AFC to run higher boost. The stock ecu shuts things down after 10.7 psi (in the upper rpm range). Also, the S-AFC is much too crude to safely tune a car, especially when you are boosting that high. You will need a stand-alone ecu, since you will also need larger injectors to run that much boost.

SPOautos

My prediction is 150rwhp cause its gonna be blown up with a piggy back. How about instead of cutting up your wire harness to splice in a piggy just get a Power FC. You and your engine will be MUCH MUCH happier with that.

Also, what all mods do you have, your going to need a lot of supporting mods to run 15-17 like fuel injectors, fuel pump, intercooler, full exhaust, computer, clutch, ect, ect. Your not going to be able to safely run more than 13 iwth just a intake and downpipe even with the computer, especially in the summer, cuase the stock IC just wont cool worth a damn.

STEPHEN

artguy

the stock ic is a piece of ****...its choking your entire system and two full lbs of pressure drop is unacceptable.

listen to spo and rynberg and the others.

dont waste your money on a piggy back junkpile....get the pfc.

j

artguy

carter...thanks...i appreciate your springtime barb...it was actually 80 two days agon...but thirty again yesterday.

it should be perfect by the time i pick my car up. mmm

homie

Artguy - nice set up !!!! Good power too! I have 336 whp with similar but stock motor and turbo's. I'm trying to attain 450whp with a twin set up. I started this thread and the search continues....

Just wanted to give you some props!

boost-in-rx7s93

MY seven will be broken in for teh first 1500 miles (proberly) so I will be running stock uther than a full exhaust 3inch downpiep three inch pipe running to a nurspec exhaust. I do want to use the twins for now even if I can only run 15 psi. I would plan on getting a fuel pump, larger injecters ( all four????), have a duel friction center force clucth with about 1000 miles of casual driving. ( no racing) I would also get the larger intercooler this summer when I would up the boost! I have heard by more than one sole that piggy abcks will work fine for less than 17. roy jonhson ran his with a t-78 at 17 psi I beleive! ( eh has blown up a few sometime along the way however) In other words I would run the car slowly (breakin) till this summer with no mods other than street port and full exhasut (clucth) I know I would have to watch teh boost guage to make sure that I am not running over 10.7 psi fopr the car would boost higher due to dp and street port! THen come summer I would do a intake front mount efficient to 17 psi and a avc-r i beleive modified bosot controller has a programmable fuel curve. Go to www.apexi.com
, or www.rx7.com (catalog)! I will do more resurch with the information yall have provided! this is why I am posting with the big guys.

My original plans were to go single but the 17 year old budget could only ddo it in peices 6 months rather than montha dn a half so I decided to do it right witht the twins! more torque and still has good times.


thanks guys, joe

boost-in-rx7s93

Anyone have any used or disconts I could hook up with tthant I would bebefit from with teh mods I would liek to make?

had to ask, joe

homie

boost-in-rx7s93,

I may want to sell my Apex front mount intercooler. I started this thread with the intent on getting 450rwhp and I may need to go with a larger intercooler. This one is in almost new condition and has polished end tanks. I can take photos for you. Could you drop me an email at goblue993@yahoo.com and let me know what you might want to pay. Thanks.

Marshall

I think Roy has a standalone (PFC)