best air intake for fd?
02-15-10, 03:24 AM
#4
The PowerFC will make a substantial difference in general performance and keep you from leaning out your motor. You're really pushing it with what you're running right now.
The fuel pump's easy to install, too, but you're not going to get much of a benefit from a higher-flowing pump without upgrading the injectors as well. Tuning my car a while back, I maxed the injectors with the stock pump and PFC. On the spot, I bought and swapped in a new Supra TT pump and only got another 10hp, YRMV. The cheapest way to more injection is to have the 850 secondaries bored to 1300, which still lets you use the stock rail.
Back to the question at hand:
I tried the Apexi intakes and noticed no performance difference at all.
I did notice a power increase with the GReddy Airinx, which include aluminum mandrel-bent pipes and pretty blue filter, which would go nicely with the new GReddy BOV... and your GReddy exhaust.
There are a couple shielded intakes by Pettit and Fighter's Garage, but they may not fit if you plan on getting a bigger intercooler and relocating the radiator. You're going to want one that results in the smoothest airflow into your turbos, and that most likely means eliminates the ribs in the stock hoses.
Again, you need to get the Power FC first. One more good mod, and you're likely to ping your motor.
The fuel pump's easy to install, too, but you're not going to get much of a benefit from a higher-flowing pump without upgrading the injectors as well. Tuning my car a while back, I maxed the injectors with the stock pump and PFC. On the spot, I bought and swapped in a new Supra TT pump and only got another 10hp, YRMV. The cheapest way to more injection is to have the 850 secondaries bored to 1300, which still lets you use the stock rail.
Back to the question at hand:
I tried the Apexi intakes and noticed no performance difference at all.
I did notice a power increase with the GReddy Airinx, which include aluminum mandrel-bent pipes and pretty blue filter, which would go nicely with the new GReddy BOV... and your GReddy exhaust.
There are a couple shielded intakes by Pettit and Fighter's Garage, but they may not fit if you plan on getting a bigger intercooler and relocating the radiator. You're going to want one that results in the smoothest airflow into your turbos, and that most likely means eliminates the ribs in the stock hoses.
Again, you need to get the Power FC first. One more good mod, and you're likely to ping your motor.
02-15-10, 11:09 AM
#6
The best all purpose intake is a cold air intake. The only intakes close to being a cold air intake are the stock air box (w/ adam_c mod) and the old M2 style air box.
I'm not sure where the posters above are coming from with regards to their posts but so long as you control boost to 10 PSI you should be OK. The factory ECu and fuel system has enough fuel for 10 PSI. Anything over that and you start running lean.
Adding an intake or exhaust removes restrictions and improves air flow into and out of the engine. When you remove restrictions and increase air flow, the factory systems for boost control weren't designed for the extra air now flowing through the motor and are overwhelmed. This leaves 2 options:
1. An aftermarket boost controller with faster reacting solenoids than the stock system to control boost to the limits of the stock ECu and fuel system or
2. some kind of ECU and fuel system upgrades (pump and larger secondary injectors) that is programmed to manage the extra air flow
The risk you will have of going solely with #1 is that you might encounter a boost spike or boost creep where you have overpowered the aftermarket boost controller.
Spend some time reading the FAQs stickied in this forum. And don't be afraid of using the Search button to research these old topics.
Trending Topics
02-15-10, 02:06 PM
#8
RN, BSN
iTrader: (6)
Join Date: Mar 2007
Location: Gluckstadt, MS
Posts: 844
Likes: 0
Received 0 Likes
on
0 Posts
Another option if you aren't going to heavily modify your car would be a pre-tuned Pettit computer. They give you a flash that's significantly safer than stock maps with exhaust mods, but just bolt in and don't sweat it. I ran a Pettit Unlimited for a while and loved it.
02-15-10, 02:42 PM
#10
Racecar - Formula 2000
However, I don't know if it'll fit with the stock IC.
02-15-10, 04:56 PM
#11
The old PFS cold-air intake is pretty good if you can get one. I modified mine to be more efficient and to prevent hot air from being drawn in backwards through the IC. I also did the Adam C cheap bastard mod on it to improve its airflow.
However, I don't know if it'll fit with the stock IC.
However, I don't know if it'll fit with the stock IC.
I forgot about that one. Haven't seen one in many moons.
02-15-10, 08:04 PM
#14
That main question is did u just brought the FD? If so u should do allot of reading on how's and ways to keep rotary happy it will make u life much easier. Everyone always talk about modding Fd but a few will take the time read about unhealthy iusses it over the years have after so many years and then address those issues don't forget a 93 fd is 17 years old.
02-15-10, 08:20 PM
#15
http://www.pettitracing.com/rx7/index_management.htm
IMO, they aren't really worth it new, however you can typically find them used around $350 which is good IMO. I'm not knocking them as I run one. 10 years ago, $650-700 was a good deal as all the standalone ECU's were $2000 or more. However, today the standalones have become much more affordable.
IMO, they aren't really worth it new, however you can typically find them used around $350 which is good IMO. I'm not knocking them as I run one. 10 years ago, $650-700 was a good deal as all the standalone ECU's were $2000 or more. However, today the standalones have become much more affordable.
02-16-10, 01:48 AM
#17
Altezza tail lights will add like 20 HP and shave a second of your 60ft trap time. swear to god. i have this friend who did it all without a PFC.
Per OP question, i have experience with the GReddy Airinx intakes. They actually made the turbos louder and that added to the sweet sound i was looking for. Who doesnt enjoy hearing a turbo spool? beyond that, i have no quantitative measurement of performance gain if any. I already had a PFC at the time. And i had boost creep too.
02-16-10, 09:54 AM
#19
M2 Performance is long gone. They folded up shop many years ago. You can find the ECU's used, but you can't get a new one from them. The difference in the Cali verses non-Cali ECU's is the EGR. If you have a non-Cali '93 car and you use a Cali ECU, you'll have the EGR engine code. It won't cause performance problems, but just a code that will be annoying.
If you have a Cali '93 car and you use a non-Cali ECU, your emissions will suffer a little as you won't have the expected EGR operation.
If you have a Cali '93 car and you use a non-Cali ECU, your emissions will suffer a little as you won't have the expected EGR operation.
02-16-10, 10:39 AM
#21
M2 Performance is long gone. They folded up shop many years ago. You can find the ECU's used, but you can't get a new one from them. The difference in the Cali verses non-Cali ECU's is the EGR. If you have a non-Cali '93 car and you use a Cali ECU, you'll have the EGR engine code. It won't cause performance problems, but just a code that will be annoying.
If you have a Cali '93 car and you use a non-Cali ECU, your emissions will suffer a little as you won't have the expected EGR operation.
If you have a Cali '93 car and you use a non-Cali ECU, your emissions will suffer a little as you won't have the expected EGR operation.
02-16-10, 10:57 AM
#22
RN, BSN
iTrader: (6)
Join Date: Mar 2007
Location: Gluckstadt, MS
Posts: 844
Likes: 0
Received 0 Likes
on
0 Posts
http://www.pettitracing.com/rx7/index_management.htm
IMO, they aren't really worth it new, however you can typically find them used around $350 which is good IMO. I'm not knocking them as I run one. 10 years ago, $650-700 was a good deal as all the standalone ECU's were $2000 or more. However, today the standalones have become much more affordable.
IMO, they aren't really worth it new, however you can typically find them used around $350 which is good IMO. I'm not knocking them as I run one. 10 years ago, $650-700 was a good deal as all the standalone ECU's were $2000 or more. However, today the standalones have become much more affordable.
02-16-10, 11:03 AM
#23
Rotary Enthusiast
do the adam c airbox mod to your stock airbox. with the mods you have you will be fine at 10 psi just control your boost search under 10 psi rule. if you control your boost you can keep the stock ECU and will not have to worry about cali smog laws.
Jeff
Jeff