Rtek 1.7 and 85 gsl-se injectors
03-08-05, 01:59 PM
#1
Senior Member
Thread Starter
Join Date: Jan 2005
Location: Rancho Cucamonga Ca,
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
Rtek 1.7 and 85 gsl-se injectors
What's the truth?
I have an Rtek 1.7 ungraded ecu and injectors from a gslse of unknown year. I am wondering how much these injectors really flow?
Does anybody know for sure what the gslse injectors flow at?
I have heard that many gslse injectors actually flow test above 720cc's.
After reading other threads on the site, it seems that 84' gslse injectors flow @ 680cc and that 85' gslse injectors flow @ 720cc. Can any of you confirm/refute this?
Have any of you flow tested 84' or 85' gslse injectors and come up with different numbers than the ones suggested above?
Lastly, I was wondering if there is a way to tell the difference between 84' and 85' injectors. So I could figure out which year mine are from.
HHTurbovert
I have an Rtek 1.7 ungraded ecu and injectors from a gslse of unknown year. I am wondering how much these injectors really flow?
Does anybody know for sure what the gslse injectors flow at?
I have heard that many gslse injectors actually flow test above 720cc's.
After reading other threads on the site, it seems that 84' gslse injectors flow @ 680cc and that 85' gslse injectors flow @ 720cc. Can any of you confirm/refute this?
Have any of you flow tested 84' or 85' gslse injectors and come up with different numbers than the ones suggested above?
Lastly, I was wondering if there is a way to tell the difference between 84' and 85' injectors. So I could figure out which year mine are from.
HHTurbovert
03-08-05, 03:53 PM
#4
Senior Member
Thread Starter
Join Date: Jan 2005
Location: Rancho Cucamonga Ca,
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
I posted it in the 2nd gen section because I know that many people with S4 turbo's are considering using the Rtek 1.7. If the gslse injectors actually flow 720cc's then they could be used with the the Rtek chip. This would make the Rtek upgrade an even more economical option since the gslse injectors can be purchased much cheaper than Aftermarket injectors.
03-08-05, 07:13 PM
#6
I think you have a couple issues:
1. Even if some 680s flow like 720s would you really want to take the chance without flow testing them. Flow testing obviously increases the cost.
2. You would lose any warranty with Rtek since they require 720cc plus.
3. I guess you could go ahead and hope for the best and monitor AFR with a wideband to be safe. But then again widebands cost money.
I don't think there is a conclusive answer but maybe if you email Hitman or someone else that rates the 680s as 720s you'll get a more definitive answer as to why they say so.
1. Even if some 680s flow like 720s would you really want to take the chance without flow testing them. Flow testing obviously increases the cost.
2. You would lose any warranty with Rtek since they require 720cc plus.
3. I guess you could go ahead and hope for the best and monitor AFR with a wideband to be safe. But then again widebands cost money.
I don't think there is a conclusive answer but maybe if you email Hitman or someone else that rates the 680s as 720s you'll get a more definitive answer as to why they say so.
Trending Topics
03-09-05, 12:02 AM
#8
https://www.rx7club.com/showthread.p...ght=19550-1370
they should be the first set that Kevin listed.
680's i have seen a few dyslexic people refer to them as 860's
they should be the first set that Kevin listed.
680's i have seen a few dyslexic people refer to them as 860's
Last edited by RotaryEvolution; 03-09-05 at 12:05 AM.
03-10-05, 12:13 AM
#12
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
That's the catch right there. Injectors are rated at both a flow and pressure. One number alone is completely useless. My guess is that the GSL-SE's EFI system ran at a lower static pressure, and that's the pressure at which they will flow 680cc/min. If they flow ~720cc/min at the FC's 250kPa (36psi) static pressure, then I'll bet the GSL-SE used a static pressure of ~225kPa (33psi).
Last edited by NZConvertible; 03-10-05 at 12:19 AM.
03-10-05, 12:20 AM
#13
Buddy of mine sent his into RC Engineering, one had an external crack and was toast, the other flowed at 680. This was an 85 GSL-SE.
Good point on the fuel pressure, I never looked at the FSMs for the different years to compare fuel psi between the S3 and S4.
Good point on the fuel pressure, I never looked at the FSMs for the different years to compare fuel psi between the S3 and S4.
03-10-05, 07:02 PM
#16
Senior Member
Thread Starter
Join Date: Jan 2005
Location: Rancho Cucamonga Ca,
Posts: 321
Likes: 0
Received 0 Likes
on
0 Posts
I know they are rated at 680, but I have seen many post from people who have had them cleaned and flow tested who say that the injectors flowed at 720.
Thread
Thread Starter
Forum
Replies
Last Post
HalifaxFD
Canadian Forum
126
05-09-16 07:06 PM
