bax_nz Posted May 31, 2007 Share Posted May 31, 2007 mods are r32 nissan skyline rb20det engine rb25det turbo running 0.85 bar 600x300x76 intercooler + piping pod filter greddy bov 4 inch exhast 111kw at the wheels took the car into beyond and the car started loosing power at 4500rpm (hitting 111kw at this point then staying at that the air and fuel ratio was at 16 (AFR:P 16) when at 4500 rpm and climbing i was told a new fuel pump and new fuel regulator should fix the problem and the car should see 180 - 200 kw what is your guys thoughts? whats the cheapest fuel pump and regulator you would recommend? if i even need to do this>? Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/ Share on other sites More sharing options...
SECURITY Posted May 31, 2007 Share Posted May 31, 2007 edit: sorry, wrong info! Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3154780 Share on other sites More sharing options...
TTT Posted May 31, 2007 Share Posted May 31, 2007 (edited) r32's don't have R&R. if your afr is hitting 16:1, it is extremely lean and obviously not enough fuel is going through. they are right. a new fuel pump will probably solve the issue. cheap option is a WALBRO 255L/h pump (yes people will say it doesn't flow enoug blah blah blah) but it flows plenty for the 200rwkw you want to make.. it will cost about $200 - $250 next price range is a used GTR fuel pump price will be about $250 or more. then there are the more expensive BOSCH pump range. then the even more expensive NIZMO range. Don't worry too much about regulator.. if you must, NIZMO makes a direct bolt on replacement which is under $200 I think.. Might also be a good idea to replace fuel filter ($30 or so) and get your injectors ultrasonicly cleaned (not sure on price) to get the 180+rwkw you will need some sort of tunable ecu or piggy back. SAFC will set you back about $250 and can bent the afr enough to give you some gains. a re-chip is even better. to give you an idea. way back when I had my first r32. i had... rb25 turbo 11psi gtr fuel pump side mount arc intercooler 3 inch exhaust from turbo back. Trust panel filter in stock air box. no ecu tuning. it made 155rwkw. Edited May 31, 2007 by GTST Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3154814 Share on other sites More sharing options...
limpus Posted June 1, 2007 Share Posted June 1, 2007 As mentioned...you won't need injectors or a fuel pressure regulator for now...you will however need a fuel pump asap and some sort of engine management...do that and watch your numbers climb...cheers... Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3154863 Share on other sites More sharing options...
mad082 Posted June 1, 2007 Share Posted June 1, 2007 its just hitting r&r. an engine management or a piggy back computer with a tune will fix it. if 16:1 afr is rich, then i'd hate to see what you call lean. bax: as GTST said, start with a new pump (and filter just to be on the safe side). that should make a world of difference. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3154875 Share on other sites More sharing options...
bax_nz Posted June 1, 2007 Author Share Posted June 1, 2007 sorry forgot to mention brought an safc to be installed but the safc is faulty and the lcd display wont light up so i had car chipped last night to remove fuel and speed cut etc and remap to 14psi Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3154918 Share on other sites More sharing options...
Ultimategtr Posted June 1, 2007 Share Posted June 1, 2007 did u get a chance to see what the duty cycle was? Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155067 Share on other sites More sharing options...
sewid Posted June 1, 2007 Share Posted June 1, 2007 Fuel pump yes. Regulator is not needed. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155077 Share on other sites More sharing options...
Blitz Posted June 1, 2007 Share Posted June 1, 2007 its just hitting r&r. an engine management or a piggy back computer with a tune will fix it. r & r? his AFR is 16 :laughing-smiley-014: Bax, you don't need a fuel regulator, but more likely you need a new pump. I would be worrying more about your AFR's right now than how many Kw at the wheels you are pulling as if you don't address the problems your car has you are going to be needing a new engine. Get a confirmed diagnosis of why your AFR's are so lean before you do anything. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155081 Share on other sites More sharing options...
bax_nz Posted June 1, 2007 Author Share Posted June 1, 2007 no couldnt see what the duty cycle , dyno didnt show that, but the guy said theres prob no point as the car wasnt recieveing enough fuel?> im ordering a Walbro 255LPH Fuel Pump will this do? where does the fuel pump go in the r32 rb20det is it easy enough to change over? once ive changed it over do i just reset the ecu and away we go? Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155120 Share on other sites More sharing options...
SECURITY Posted June 1, 2007 Share Posted June 1, 2007 if 16:1 afr is rich, then i'd hate to see what you call lean.bax: as GTST said, start with a new pump (and filter just to be on the safe side). that should make a world of difference. oh shit! yeah i understood that wrong, too early in the morning for me. sorry guys. that was a major brain fart. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155128 Share on other sites More sharing options...
TTT Posted June 1, 2007 Share Posted June 1, 2007 yes walbro pump is fine. it goes in the tank in the boot. under the carpet towards the right hand side of the spare wheel it should be pretty easy to swap. you might need to modify the craddle a little to hold the new pump in if it is slightly different in size. like I said before. replace fuel filter and as well. if you got more cash, clean injectors. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155152 Share on other sites More sharing options...
siddr20 Posted June 1, 2007 Share Posted June 1, 2007 ^ walbro genuine one cost me 150 to my door.. check out kudos motosport.. Hmm who says the walbro pump doesnt flow more than 200kw?? is that a fact? Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155288 Share on other sites More sharing options...
Pauly33GTS-t Posted June 1, 2007 Share Posted June 1, 2007 they are rated at 500hp at 14volts do cubes volt mod for fuel pump and itll be fine and dandy, or take it somewhere for them to make sure it runs at 14.2v or watever it is constantly. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155353 Share on other sites More sharing options...
STATUS Posted June 1, 2007 Share Posted June 1, 2007 ^ walbro genuine one cost me 150 to my door.. check out kudos motosport.. Hmm who says the walbro pump doesnt flow more than 200kw?? is that a fact? nah thats BS, i have tuned cars will walbros making 50-80rwkw more than that. Cats car (300+) for example had a walbro in it before i changed it (precaution, it was two years old) to a tomei pump. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155379 Share on other sites More sharing options...
xRHETTx Posted June 1, 2007 Share Posted June 1, 2007 Hi all.. I had my car dynoed on Wednesday and am experiencing a similar problem. 92 R32 GTST RB20 170000km Pod filter 3 inch split dump, 5 inch metal cat and 3 inch cat back. R34 GTT SM intercooler Runs about 0.75-0.8 bar (no boost controller, standard actuator.) I got 155.1 kW at the wheels... but my afrs were between 12.8-13.0 all they way to red line. I'll post the dyno graph later. The workshop cleaned my AFM but it made no difference. My fuel filter is only a few months old. Now i know its not as catastrophically as lean as 16.0:1, but is it worth starting my problem solving with a new fuel pump? Cheers, Rhett Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155394 Share on other sites More sharing options...
STATUS Posted June 1, 2007 Share Posted June 1, 2007 Hi all..I had my car dynoed on Wednesday and am experiencing a similar problem. 92 R32 GTST RB20 170000km Pod filter 3 inch split dump, 5 inch metal cat and 3 inch cat back. R34 GTT SM intercooler Runs about 0.75-0.8 bar (no boost controller, standard actuator.) I got 155.1 kW at the wheels... but my afrs were between 12.8-13.0 all they way to red line. I'll post the dyno graph later. The workshop cleaned my AFM but it made no difference. My fuel filter is only a few months old. Now i know its not as catastrophically as lean as 16.0:1, but is it worth starting my problem solving with a new fuel pump? Cheers, Rhett yours seems to be on the money 155rwkw std turbo, the gtt coolers (better than stock) have about a 2 psi drop accross them too so the turbos have to work pretty hard accross them. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155402 Share on other sites More sharing options...
STATUS Posted June 1, 2007 Share Posted June 1, 2007 Fuel pump yes.Regulator is not needed. am fuel regs cause more dramas than good. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155403 Share on other sites More sharing options...
xRHETTx Posted June 1, 2007 Share Posted June 1, 2007 Yeah I'm really happy with the result, picked up 13kW with just the cooler, with the car holding 0.75bar (11psi) all the way through to the red line. I should get a good further increase when i raise the boost to 13psi or so.. I just want to get the fuel sorted before I finally install my other goodies - Jaycar IEBC, DFA and intercooler water spray. Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155445 Share on other sites More sharing options...
Rekin Posted June 1, 2007 Share Posted June 1, 2007 Congrats on the results xRHETTx! Glad to see another r32 r34SMIC running around! And you also got similar power to me! which re-inforces that my kw gain is legit!! Link to comment https://www.sau.com.au/forums/topic/170961-just-had-my-car-on-the-dyno-and-it-sucked/#findComment-3155715 Share on other sites More sharing options...
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