Efini Turbo Upgrade
Banned. I got OWNED!!!
Joined: Mar 2002
Posts: 623
Likes: 1
From: Cincinnati
If your stock turbos are shot and you want a perfectly stock, brand new, replacement then these are what your would want. If you want more power and a direct bolt on, search for the recent threads on the new BNR's. These are a better bang for your $$$. Again, though, if you want stock boost and have a stock IC, ECU and fuel system, get the 99 specs (Efini) are what you would want.
Also, you can get a set of used 93-95 turbos for really cheap if you just want to rplace you bad ones
.
Also, you can get a set of used 93-95 turbos for really cheap if you just want to rplace you bad ones
.
The '99-up stock twins are nice units. More low-end power and faster response than the stockers.
For ultimate power, the '93-95 twins are actually better. They hold up better under high (read: over 14psi) boost than the '99+. Many Japanese tuners swap the newer turbos out for the earlier ones if they're going for big boost.
Personally, I'd love a set of the '99 twins. I plan on staying with the twins and conservative boost, and better response is always a beautiful thing.
Dale
For ultimate power, the '93-95 twins are actually better. They hold up better under high (read: over 14psi) boost than the '99+. Many Japanese tuners swap the newer turbos out for the earlier ones if they're going for big boost.
Personally, I'd love a set of the '99 twins. I plan on staying with the twins and conservative boost, and better response is always a beautiful thing.
Dale
If your stock turbos are shot and you want a perfectly stock, brand new, replacement then these are what your would want. If you want more power and a direct bolt on, search for the recent threads on the new BNR's. These are a better bang for your $$$. Again, though, if you want stock boost and have a stock IC, ECU and fuel system, get the 99 specs (Efini) are what you would want.
Also, you can get a set of used 93-95 turbos for really cheap if you just want to rplace you bad ones.
Also, you can get a set of used 93-95 turbos for really cheap if you just want to rplace you bad ones
.sorry to wake this thread up (that means I did the "search" right?)
anyway someone told me upgrade to 99 spec turbo will require upgrade ECU but look like you say it is not which is good news for me.
can someone confirm?
Thanks for searching!
99/efini twins do not require an ECU change. I'm sure the good people at RX7.com will confirm that when you call them to order. The only time you need to upgrade the ECU is when you want to run more boost or to change timing or fuel to account for a ported motor and larger fuel injectors. That is where a standalone is handy.
99/efini twins do not require an ECU change. I'm sure the good people at RX7.com will confirm that when you call them to order. The only time you need to upgrade the ECU is when you want to run more boost or to change timing or fuel to account for a ported motor and larger fuel injectors. That is where a standalone is handy.
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The '99-up stock twins are nice units. More low-end power and faster response than the stockers.
For ultimate power, the '93-95 twins are actually better. They hold up better under high (read: over 14psi) boost than the '99+. Many Japanese tuners swap the newer turbos out for the earlier ones if they're going for big boost.
Personally, I'd love a set of the '99 twins. I plan on staying with the twins and conservative boost, and better response is always a beautiful thing.
Dale
For ultimate power, the '93-95 twins are actually better. They hold up better under high (read: over 14psi) boost than the '99+. Many Japanese tuners swap the newer turbos out for the earlier ones if they're going for big boost.
Personally, I'd love a set of the '99 twins. I plan on staying with the twins and conservative boost, and better response is always a beautiful thing.
Dale
I've been pretty happy with the response and power, and the reliability of my '99's. I got them very lightly used for alot less than $2500, but all the same I've been pleasantly surprised.
The reality is, on the "more power" thing, if you're talking sequential, it doesn't matter what you bolt on there as far as peak HP, everything, from OE 93-95, to '99, to BNR, are going to net out someplace in the 365 to 385 rwhp range @ 15 psi, depending on your individual car. Getting more out of it will require higher boost (which I'm not sure I'd do with any sequential twins), non-sequential, more aggressive porting, etc.
Given that, the key is to maintain as much of that fabulous response that only sequential twins can deliver, after you've breathed the car out with porting, open exhaust, etc.
The reality is, on the "more power" thing, if you're talking sequential, it doesn't matter what you bolt on there as far as peak HP, everything, from OE 93-95, to '99, to BNR, are going to net out someplace in the 365 to 385 rwhp range @ 15 psi, depending on your individual car. Getting more out of it will require higher boost (which I'm not sure I'd do with any sequential twins), non-sequential, more aggressive porting, etc.
Given that, the key is to maintain as much of that fabulous response that only sequential twins can deliver, after you've breathed the car out with porting, open exhaust, etc.
I've been pretty happy with the response and power, and the reliability of my '99's. I got them very lightly used for alot less than $2500, but all the same I've been pleasantly surprised.
The reality is, on the "more power" thing, if you're talking sequential, it doesn't matter what you bolt on there as far as peak HP, everything, from OE 93-95, to '99, to BNR, are going to net out someplace in the 365 to 385 rwhp range @ 15 psi, depending on your individual car. Getting more out of it will require higher boost (which I'm not sure I'd do with any sequential twins), non-sequential, more aggressive porting, etc.
Given that, the key is to maintain as much of that fabulous response that only sequential twins can deliver, after you've breathed the car out with porting, open exhaust, etc.
The reality is, on the "more power" thing, if you're talking sequential, it doesn't matter what you bolt on there as far as peak HP, everything, from OE 93-95, to '99, to BNR, are going to net out someplace in the 365 to 385 rwhp range @ 15 psi, depending on your individual car. Getting more out of it will require higher boost (which I'm not sure I'd do with any sequential twins), non-sequential, more aggressive porting, etc.
Given that, the key is to maintain as much of that fabulous response that only sequential twins can deliver, after you've breathed the car out with porting, open exhaust, etc.
Mary is amazing, she's helped me quite a bit.
I loved my 99 specs on my first rx7, I'm pulling them off of it and getting them rebuilt then I'll be selling them to go single. The new owner is putting in an LS1 (didn't know when he bought it) and offered me the chance to buy my old motor/tranny/turbos back for cheap, so I did.
I loved my 99 specs on my first rx7, I'm pulling them off of it and getting them rebuilt then I'll be selling them to go single. The new owner is putting in an LS1 (didn't know when he bought it) and offered me the chance to buy my old motor/tranny/turbos back for cheap, so I did.
