MazdaSpeed93

I just got done racing my friend, he has a 1998 Eclipse GS-T and he has an HKS blow off valve and a K&N filter, he has a couple of BOV mods too so he spikes to like 20psi for like 2 seconds then it drops to like 13psi. He beat me everytime from a 40mph role. Should a stock RX7 be able to beat an eclipse with those mods? I think there might be something wrong with my car, it has a bad high rpm miss, i hear that i need to get a better ignition thing to help that. What do you think, is there something wrong with my car? Should i be able to be him?

impactwrench

Thats just embarrasing. Tell him your car needs apex seals, new turbos, cooling system mods, and a fuel filter

Wing0

yes, you should be able to beat him

efini_kid

im sorry to hear that...when i put a hks bov on my 98 st when i had it just fucked up my car....

MazdaSpeed93

What the hell! I dont understand how be beats me. I do wanna get a RB dual exhaust and a downpipe and a Greddy Airinx Intake, that ought to take care of him.

onefast3gen

iTrader: (1)

A bov wont make you get a boost spike

rynberg

Adding more mods isn't the solution, getting your car working properly is. You don't need an ignition amp, you need to fix your car.

*last time fuel filter was changed?
*last time spark plugs/wires were changed?
*last time air filter was replaced?
*boost pattern?
*mods?
*mileage on motor?

rotorsownyou7

Don't be adding mods, fix this problem and you should beat him. Why is he spiking to 20 PSI anyway?

Kevin T. Wyum

Stock car in perfect running order is able to run a 13.3 with a "good" driver. Maybe your friend has more done to his car than he's telling you? 20psi spike for a few seconds is a lot of boost for a car with supposedly very little done.

kuroi FD

i think stock boost is like 18psi i dont thing it should be as low as 13, those babie motors need a lot of boost to make power.

MazdaSpeed93

You must not of recirculated. My HKS was free so I put that on because the stock CBV leaks around 12psi.

He means I cut the stock dump tube to allow more airflow through the intake pipe.

As for the spiking, a stock 4g63 has a BCS restictor which restricts boost. I have modified mine to have more flow. I have nothing ported and stock exhaust so air just flows past my wastegate creating the spike. So, I'm running very lean for a couple of seconds while it spikes at WOT(haven't had time to put on my MBC).

Anyway, his car seems fine. There's a little hesitation around mid RPM's but I'm thinking that's just the second turbo kicking in(don't know how smooth the transition is supposed to be, but psi does drop to 8 at that time correct?)

I usually pull a little at the start because of my little T-25 turbo, then after that it's pretty much even, so it's no dramatic loss like some of you may be thinking.

P.S. If you haven't figured this out by now, I'm the one with the GST.

MazdaSpeed93

Uh, riiight. Stock psi is 11-12.

Exidous

I've got a friend in jersey that races at atco raceway with a 92 gsx. He put on a exhaust and cranked it up to 25psi. He bought the car for 1500 and doesnt care about it. Oh and it runs about a 12.3-12.5 regularly. Kinda funny really.

saburo

iTrader: (1)

you need a bigger blow off valve. That should burn his ***.

MazdaSpeed93

Please, stop harping on him and telling him misinformation. He just got the car and I'm learning him up right one mod at a time .

-GST

MazdaSpeed93

Why is that funny? I would say he is pretty stupid to run 25psi with an exhaust and the 14b turbo. He has to have fuel mods to run that high of psi...

He should probably be well into the 11's if he had the supporting mods.

-GST

widebody2

its kinda funny because he bought a car for 1500 bucks and does low 12s with it...most guys on here dump thousands and thousands of dollars into their 7s and do the same times

MazdaSpeed93

Whoops, double post.

MazdaSpeed93

Yeah, AWD is nice, although RX-7's seem to grip extremely well. And you should really tell him to put some fuel mods in. Or tell him I'll buy it for a couple hundred bucks .

-GST

akiratdk

hehehe.... well.... try changing your spark plugs first to kinda solve the misfireing thingy.... our sparkplugs go out pretty quick I heard.... and since you just got the car.... I would change all the fluids in your car~~~ ... tranny, engine, brake, diff....coolant.....ect...

MazdaSpeed93

I already helped him put new spark plugs and wires in.

Like I said, his car runs fine, you can just feel a little something going on around mid RPM's. Like I said before, I suspect that the second turbo kicking in, can anybody confirm this?

-Eclipse GST

Kevin T. Wyum

Spend $50 on a crush bent precat back exhaust and his RX7 will be capable of mid 12's if his driving is up to snuff, requires practice.

SlingShotRX7

Do you have a BOOST Gauge??

Holding boost??

bet he got a boost leak @ at the Y pipe/cross over connection.

`sl!mXP

maybe he needs more downforce? lol :P

In all seriousness before you do any more racing or any mods at all go read the newbie faqs/commonly asked questions and read up on the reliability mods, the FAQs answer SO MANY questions that even after half a year of owning this car Im still looking up lots of stuff in it. Those 2 sources should give you enough information to get you started on the basic troubleshooting, but if you cant figure out what the problem is after getting the necessary gauges and changing fluids, plugs, maintanence stuff, etc. I would suggest taking it to a rotary speciliast? Or maybe it was just a fluke of a race?

rotorsownyou7

Not sure what is wrong without getting a boost reading, but something has to be wrong with that loss. Unless of course you can't drive?