FPR, Walbro, 380 injectors dyno
07-05-2004, 06:15 PM
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FPR, Walbro, 380 injectors dyno
I hear a lot of people talk about how there injectors are to small for 400rwhp, or how you have to use a FPR that has a 1:1 riser. Well I finally had a chance to dyno my car with the walbro and FPR. I found out that with the riser the a/f just went way off the scale. It was way below 10, so I just ended up take the riser off and run a constant 50psi accross the board and it worked out great. when I had a chance to talk to tadashi(Technosquare), he told me that he programed the ecu to run 40psi of fuel at idle with 48psi using the riser. well I guess I should post the dynos.
Dynos were done at 8psi, 8.5psi and 9psi and if you look they are all way below 12 on the a/f. highest reading was 11.7 at red line on the 9 psi dyno and remember my ecu was only programed for 8.5 psi. first dyno shows my old 8psi dyno done in march vs the 9 psi. Second dyno just the 9psi and last were the three I did at 8,8.5,9psi on the first.
dyno 1
Dynos were done at 8psi, 8.5psi and 9psi and if you look they are all way below 12 on the a/f. highest reading was 11.7 at red line on the 9 psi dyno and remember my ecu was only programed for 8.5 psi. first dyno shows my old 8psi dyno done in march vs the 9 psi. Second dyno just the 9psi and last were the three I did at 8,8.5,9psi on the first.
dyno 1
07-05-2004, 06:41 PM
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djgcue
just strictly the flash. thinking of running something like a super afc to make the curve look better or maybe making a road trip to TS in CA and have them tune it for my car. Again I really think the flash is a great deal all around. Spaz
just strictly the flash. thinking of running something like a super afc to make the curve look better or maybe making a road trip to TS in CA and have them tune it for my car. Again I really think the flash is a great deal all around. Spaz
07-05-2004, 07:32 PM
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little_rod
yep, Because its running so rich and the simple fact that I could adjust the fuel pressure to my liking makes it possible for me to run a higher boost. even higher then I went. I am just not sure if the block can take more so till I plant the new rods and pistons I will hold off with the numbers I got.
yep, Because its running so rich and the simple fact that I could adjust the fuel pressure to my liking makes it possible for me to run a higher boost. even higher then I went. I am just not sure if the block can take more so till I plant the new rods and pistons I will hold off with the numbers I got.
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07-05-2004, 08:03 PM
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looks good spaz...
hp/tq numbers are dead on for those boost amounts. i would also not go any higher than 9psi on the street during TX summers...
did you have tadashi take out timing also? if so, what does you total timing map look like (timing vs. rpm)?
tia
m
hp/tq numbers are dead on for those boost amounts. i would also not go any higher than 9psi on the street during TX summers...
did you have tadashi take out timing also? if so, what does you total timing map look like (timing vs. rpm)?
tia
m
07-05-2004, 08:26 PM
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SKiDaZZLe
I told them I wanted jotechs timining (yours
)map with a fuel curve for 8.5psi using the 380 injectors. Seem to of worked out pretty good. No pinging or anything. The guys at 21st century wanted me to raise the boost to 10psi but I just thought it would have been a little to much.
I told them I wanted jotechs timining (yours
)map with a fuel curve for 8.5psi using the 380 injectors. Seem to of worked out pretty good. No pinging or anything. The guys at 21st century wanted me to raise the boost to 10psi but I just thought it would have been a little to much.
07-05-2004, 08:30 PM
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Thanks Spaz, so it seem that your set-up work better without the FPR correct? I'm also at the point of working on the fuel demands of the TT and then upping the boost.
07-05-2004, 08:33 PM
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350Now
No you still need the FPR but it does not have to be one that has a fuel pressure riser. At idle without the FPR the psi is at 70 so you need the FPR to bypass the fuel that the internal one can not. The walbro just pumps way more fuel the the stock internal regulator can handle.
No you still need the FPR but it does not have to be one that has a fuel pressure riser. At idle without the FPR the psi is at 70 so you need the FPR to bypass the fuel that the internal one can not. The walbro just pumps way more fuel the the stock internal regulator can handle.
07-05-2004, 09:00 PM
#16
Good numbers. I suspect the same ultra rich condition will happen to the eManage folks that install the FPR with raising rate. The base Greddy map is designed for the stock FPR and the subsequent drop in fuel pressure as RPM rises. Very interesting discoverery.
350NOW also noticed his fuel pressiure was very stable at 52psi even with stock FPR and stock fuel pump at 6psi. These cars have a mind of their own sometimes. Thats why its important that everyone do their own testing, and not rely on the results of one user.
Good work Spaz!
350NOW also noticed his fuel pressiure was very stable at 52psi even with stock FPR and stock fuel pump at 6psi. These cars have a mind of their own sometimes.
Thats why its important that everyone do their own testing, and not rely on the results of one user. Good work Spaz!
07-05-2004, 09:29 PM
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ravaz
No egt in the car so i could not tell you sorry.
gq_626
I could not agree with you more. Testing and tuning is the key to this car. like you said each car seems to have a mind of its own, so just because my car need a FPR some might not. The only thing I can say for sure is that on the stock fuel pump the fuel pressure will drop way low. the fuel pump is a must and seems to agree with all the cars that are running higher boost safely.
No egt in the car so i could not tell you sorry.
gq_626
I could not agree with you more. Testing and tuning is the key to this car. like you said each car seems to have a mind of its own, so just because my car need a FPR some might not. The only thing I can say for sure is that on the stock fuel pump the fuel pressure will drop way low. the fuel pump is a must and seems to agree with all the cars that are running higher boost safely.
07-06-2004, 04:44 AM
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The reason they let off before 7K rpms is likely because max power looks to be around 6250 rpms.
One other point of clarification regarding the ability to adjust boost using E01 is that--unless I'm mistaken--the TS program is set for a specific level of boost (i.e. 8.5 psi). If you change boost on the fly to 10psi, it would not autocorrect for the increased boost by adding more fuel. The reason he can boost to 9psi is because the TS program is conservative (good idea, btw).
--Steve
One other point of clarification regarding the ability to adjust boost using E01 is that--unless I'm mistaken--the TS program is set for a specific level of boost (i.e. 8.5 psi). If you change boost on the fly to 10psi, it would not autocorrect for the increased boost by adding more fuel. The reason he can boost to 9psi is because the TS program is conservative (good idea, btw).
--Steve
07-06-2004, 08:15 AM
#20
Exactly, Zimbo.
This would actually be a really good application for the eManage. Use the TS reflash set to 8.5psi, and then fine tune and refine the fuel curve with an eManage. The eManage is more reliable and stable than an AFC, since you'll be adding fuel via increased IPW, rather than MAF conditioning.
This would actually be a really good application for the eManage. Use the TS reflash set to 8.5psi, and then fine tune and refine the fuel curve with an eManage. The eManage is more reliable and stable than an AFC, since you'll be adding fuel via increased IPW, rather than MAF conditioning.