2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

recommend injectors please

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Old May 30, 2008 | 01:43 PM
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recommend injectors please

so been reading the forums, and have to upgrade my injectors, firgure it one of the issues why car runs like ****.

It is 10th anny that is street ported and runs on t4 turbo and has stock injectors ( bought the car whith that set up). Wondering what would be the cheapest and best set up. THinking of picking up some 1600cc injectors for secondaries and calling it a day. Oh also have a apexi power fc I just picked up, so tuning not an issue.
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Old May 30, 2008 | 02:08 PM
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87 t-66's Avatar
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what size turbo? i'd go with 1000's or 1600's...dont forget an aftermarket fpr and a walbro
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Old May 30, 2008 | 02:29 PM
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its a t4 turbo, the car already had an aftermarket fuel pressure regulator and ..........................walbro?
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Old May 30, 2008 | 02:32 PM
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Originally Posted by Nephilim
its a t4 turbo, the car already had an aftermarket fuel pressure regulator and ..........................walbro?
walbro fuel pump...t4 turbo doesnt help much.
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Old May 30, 2008 | 04:43 PM
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so i got bosch 1680 for secondaries, would I be fine with the stock 550 for the primaries

or should i go with all 720cc injectors
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Old May 31, 2008 | 05:29 AM
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That's a really poor attitude.
If the car runs like **** now, it's going to run WORSE with larger fuel injectors.

Fix the problem FIRST *then* modify...


-Ted
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Old May 31, 2008 | 08:20 AM
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your proposed fuel setup is ok, but I agree with Ted--you need to figure out what's up with the car. What do you mean it runs like ****?
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Old May 31, 2008 | 10:10 AM
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Originally Posted by Nephilim
so been reading the forums, and have to upgrade my injectors, firgure it one of the issues why car runs like ****.
That may or may not be the case, but I don't think you would be very happy to spend several hundred dollars on bigger injectors just to find out the car runs even worse. What are the current symptoms?

Originally Posted by Nephilim
It is 10th anny that is street ported and runs on t4 turbo and has stock injectors ( bought the car whith that set up).
FYI "T4" could refer to the basic compressor size, or even just the flange size. You need to be more specific.

Originally Posted by Nephilim
Oh also have a apexi power fc I just picked up, so tuning not an issue.
Just to make sure you understand the situation...
1. The PFC (Part # 414AZ004) requires an adapter in order to work with your RX-7.
http://www.banzai-racing.com/index_contact.htm
2. The PFC does not tune itself. Given your basic questions, you are going to really need an experienced tuner to set up the PFC.
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Old May 31, 2008 | 03:26 PM
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Originally Posted by Evil Aviator
That may or may not be the case, but I don't think you would be very happy to spend several hundred dollars on bigger injectors just to find out the car runs even worse. What are the current symptoms?


FYI "T4" could refer to the basic compressor size, or even just the flange size. You need to be more specific.


Just to make sure you understand the situation...
1. The PFC (Part # 414AZ004) requires an adapter in order to work with your RX-7.
http://www.banzai-racing.com/index_contact.htm
2. The PFC does not tune itself. Given your basic questions, you are going to really need an experienced tuner to set up the PFC.


lol im not a reatrd, the power fc was loaded with the base map by banzai for me. Car turns on a can run, but has no low end, not tell after 3k rpms then the car runs like normal, t-04b turbo I believe.
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Old May 31, 2008 | 09:43 PM
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Originally Posted by Nephilim
lol im not a reatrd
Advanced automotive knowledge is not part of human instinct, nor is it part of the normal K-12 school curriculum, so this has nothing to do with being retarded. I just wanted to make sure you understood the situation so you don't waste time and/or money needlessly.

Originally Posted by Nephilim
the power fc was loaded with the base map by banzai for me.
Good, you shouldn't attempt any tuning on your own.

Originally Posted by Nephilim
Car turns on a can run, but has no low end, not tell after 3k rpms then the car runs like normal
Bigger secondary injectors won't help that at all. Therefore, as RETed said, you need to troubleshoot the problem first.

Originally Posted by Nephilim
t-04b turbo I believe.
There are several different models of T-04B, but it doesn't matter at this point, lol.
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Old May 31, 2008 | 11:06 PM
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Originally Posted by Nephilim
lol im not a reatrd, the power fc was loaded with the base map by banzai for me. Car turns on a can run, but has no low end, not tell after 3k rpms then the car runs like normal, t-04b turbo I believe.
If this is the case, then why not tune the PowerFC to get your low end back?
What makes you think throwing bigger fuel injectors is going to fix your problem?


-Ted
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Old Jun 1, 2008 | 06:51 AM
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Dude your askin a question and there trying to help you just listen and dont get so defensive. THEY know what there saying!
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Old Jun 1, 2008 | 01:35 PM
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so what do you guy think could be the issue with the shitty start up and bad responseon the down low.
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Old Jun 1, 2008 | 01:42 PM
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maybe timing is wack,low compression,need a tunning section,start with the basic like check your compression,tune up,vacuum leaks and the work from there
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Old Jun 1, 2008 | 07:17 PM
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ghetto compression check says everything is fine in that department, now for the vacumm leaks, working on right now ( manual is hard to read about tubes and what exactly goes where)
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