is there any way to change the rev limit on the 420a and what is better to do, long rods with 8.6:1 pistons or eagle h-beam standard length rods if i am going to run a turbo
#102706, "RE: rev limit/and turbo ?" In response to Reply # 0
My rev limiter was negated when I installed my programmable MSD DIS-2. I set it my rev limiter to 8500rpm. You definitely want to upgrade your valve train though, and make sure it's even necessary that you up your rev limiter.
'99gs with some "T": -HRC 20g-FMIC-Portfueler-500cc secondaries-stock primaries-Walbro 255lph fuel pump-p&p intake manifold, p&p head-5 angle valve job-Crane #14 cams-Fidanza adjustable cam gears-PT Cruiser lash adjusters and followers-Crane valve springs-ARP head studs-Built bottom end-JE 8.6 forged pistons-Eagle H-beam rods-Clevite bearings-Total Seal piston rings-Melling oil pump-solid front engine mount (XtremeRS-Matt)-prothane side and rear inserts-Fluidyne radiator-F-A-L slim fans-Thermal R&D 3" cat-back exhaust-HRC eliminator 3" dp-3" hi-flow cat-Greddy type RS bov-Greddy profec B spec-2 electronic boost controller-MSD DIS-2 programmable ignition-Optima red top (in trunk)-Zeitronix Zt-2 wideband A/F meter/datalogger-Greddy gauges: 60mm p/h: boost,egt,a/f- 52mm: oil pressure, fuel pressure-Nology Hot wires-Denso plugs-Missing Link-Eibach pro-kit springs-KYB AGX adjustable shocks-18" Falken Torque 5 (gunmetal)-Falken Ziex 512 225-40-18-empty wallet : (
Originally posted by thedawg Get the goddamn fucking right plugs and set the goddamn fucking right gap. Maybe throw in a goddamn fucking stock coil pack, and read the goddamn fucking chiltons.
#102707, "RE: rev limit/and turbo ?" In response to Reply # 1
Originally posted by devvin My rev limiter was negated when I installed my programmable MSD DIS-2. I set it my rev limiter to 8500rpm. You definitely want to upgrade your valve train though, and make sure it's even necessary that you up your rev limiter.
Impossible. You'll still fuel cut at 7200 RPM, unless you have something else providing fuel, and you'll still spark cut at 7800RPM unless you have something else providing spark trigger signals. Those RPM are hardcoded into the factory ECU.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#102712, "RE: rev limit/and turbo ?" In response to Reply # 2
Originally posted by DarkOne
Originally posted by devvin My rev limiter was negated when I installed my programmable MSD DIS-2. I set it my rev limiter to 8500rpm. You definitely want to upgrade your valve train though, and make sure it's even necessary that you up your rev limiter.
Impossible. You'll still fuel cut at 7200 RPM, unless you have something else providing fuel, and you'll still spark cut at 7800RPM unless you have something else providing spark trigger signals. Those RPM are hardcoded into the factory ECU.
Yes, I control spark with my programmable DIS-2 and I control fuel with my split second r4 program.
'99gs with some "T": -HRC 20g-FMIC-Portfueler-500cc secondaries-stock primaries-Walbro 255lph fuel pump-p&p intake manifold, p&p head-5 angle valve job-Crane #14 cams-Fidanza adjustable cam gears-PT Cruiser lash adjusters and followers-Crane valve springs-ARP head studs-Built bottom end-JE 8.6 forged pistons-Eagle H-beam rods-Clevite bearings-Total Seal piston rings-Melling oil pump-solid front engine mount (XtremeRS-Matt)-prothane side and rear inserts-Fluidyne radiator-F-A-L slim fans-Thermal R&D 3" cat-back exhaust-HRC eliminator 3" dp-3" hi-flow cat-Greddy type RS bov-Greddy profec B spec-2 electronic boost controller-MSD DIS-2 programmable ignition-Optima red top (in trunk)-Zeitronix Zt-2 wideband A/F meter/datalogger-Greddy gauges: 60mm p/h: boost,egt,a/f- 52mm: oil pressure, fuel pressure-Nology Hot wires-Denso plugs-Missing Link-Eibach pro-kit springs-KYB AGX adjustable shocks-18" Falken Torque 5 (gunmetal)-Falken Ziex 512 225-40-18-empty wallet : (
Originally posted by thedawg Get the goddamn fucking right plugs and set the goddamn fucking right gap. Maybe throw in a goddamn fucking stock coil pack, and read the goddamn fucking chiltons.
#102728, "RE: rev limit/and turbo ?" In response to Reply # 3
Originally posted by devvin Yes, I control spark with my programmable DIS-2 and I control fuel with my split second r4 program.
No, your factory ECU is still sending the spark trigger signals to the DIS. You'll still cut at 7800 RPM, regardless of what you think.... and the stock injecotrs, if you're doing an 8-injector setup, will still shut down at 7200RPM. if the R4 is a standalone fuel controller like a MS, then you'll be fine to 7800RPM, and no more.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#102729, "RE: rev limit/and turbo ?" In response to Reply # 4
I must have hooked it up incorrectly somehow because I have hit just under 9000rpm before. I know you know what you're talking about, but I can promise you that I'm telling the truth about my particular setup. I was actually suprised when it happened the first time because in the instructions for the MSD it stated that the unit would not override my factory Rev-limiter, and yet it did. It freaked me out. I can't explain why my car revs that high without cutting spark. I'm happy it does though.
'99gs with some "T": -HRC 20g-FMIC-Portfueler-500cc secondaries-stock primaries-Walbro 255lph fuel pump-p&p intake manifold, p&p head-5 angle valve job-Crane #14 cams-Fidanza adjustable cam gears-PT Cruiser lash adjusters and followers-Crane valve springs-ARP head studs-Built bottom end-JE 8.6 forged pistons-Eagle H-beam rods-Clevite bearings-Total Seal piston rings-Melling oil pump-solid front engine mount (XtremeRS-Matt)-prothane side and rear inserts-Fluidyne radiator-F-A-L slim fans-Thermal R&D 3" cat-back exhaust-HRC eliminator 3" dp-3" hi-flow cat-Greddy type RS bov-Greddy profec B spec-2 electronic boost controller-MSD DIS-2 programmable ignition-Optima red top (in trunk)-Zeitronix Zt-2 wideband A/F meter/datalogger-Greddy gauges: 60mm p/h: boost,egt,a/f- 52mm: oil pressure, fuel pressure-Nology Hot wires-Denso plugs-Missing Link-Eibach pro-kit springs-KYB AGX adjustable shocks-18" Falken Torque 5 (gunmetal)-Falken Ziex 512 225-40-18-empty wallet : (
Originally posted by thedawg Get the goddamn fucking right plugs and set the goddamn fucking right gap. Maybe throw in a goddamn fucking stock coil pack, and read the goddamn fucking chiltons.
#102730, "RE: rev limit/and turbo ?" In response to Reply # 5
Originally posted by devvin I must have hooked it up incorrectly somehow because I have hit just under 9000rpm before. I know you know what you're talking about, but I can promise you that I'm telling the truth about my particular setup. I was actually suprised when it happened the first time because in the instructions for the MSD it stated that the unit would not override my factory Rev-limiter, and yet it did. It freaked me out. I can't explain why my car revs that high without cutting spark. I'm happy it does though.
Your tach is wrong.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#102731, "RE: rev limit/and turbo ?" In response to Reply # 6
Your tach is wrong.
how could my tach be wrong? It sits right under 1k at idle and seems right in relation to my speedometer as far as needle position while on the highway. Could it be wrong only at high rpm??? I don't understand how my tach could be fine with a functioning rev-limit at 7200rpm and then I install an MSD dis-2 and the NEXT day the car revs out to almost 9000rpm with no rev-limit so then my tach is wrong?. That makes no sense. Please explain. Thanks Dino.
'99gs with some "T": -HRC 20g-FMIC-Portfueler-500cc secondaries-stock primaries-Walbro 255lph fuel pump-p&p intake manifold, p&p head-5 angle valve job-Crane #14 cams-Fidanza adjustable cam gears-PT Cruiser lash adjusters and followers-Crane valve springs-ARP head studs-Built bottom end-JE 8.6 forged pistons-Eagle H-beam rods-Clevite bearings-Total Seal piston rings-Melling oil pump-solid front engine mount (XtremeRS-Matt)-prothane side and rear inserts-Fluidyne radiator-F-A-L slim fans-Thermal R&D 3" cat-back exhaust-HRC eliminator 3" dp-3" hi-flow cat-Greddy type RS bov-Greddy profec B spec-2 electronic boost controller-MSD DIS-2 programmable ignition-Optima red top (in trunk)-Zeitronix Zt-2 wideband A/F meter/datalogger-Greddy gauges: 60mm p/h: boost,egt,a/f- 52mm: oil pressure, fuel pressure-Nology Hot wires-Denso plugs-Missing Link-Eibach pro-kit springs-KYB AGX adjustable shocks-18" Falken Torque 5 (gunmetal)-Falken Ziex 512 225-40-18-empty wallet : (
Originally posted by thedawg Get the goddamn fucking right plugs and set the goddamn fucking right gap. Maybe throw in a goddamn fucking stock coil pack, and read the goddamn fucking chiltons.
#102708, "RE: rev limit/and turbo ?" In response to Reply # 0
Originally posted by rykki long rods with 8.6:1 pistons or eagle h-beam standard length rods
I'd go with the long-rod kit, as it does two main things:
1) provides longer dwell time at TDC and can increase torque 2) provides better rod length to stroke ratio, which changes the angle at which pressure is applied to the rod during compression and power strokes. This allows you to turn higher RPMs (if you can support it) and applies less stress to the rod.
~Luke Facebook 1969 Cougar - 11.91 - 380HP 2007 GSXR 750 1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot
#102723, "RE: rev limit/and turbo ?" In response to Reply # 10
MSnS is very affordable but I suggest you do a search on these forums to see what is involved and where to get one before jumping for it. the unit can be had preassembled for $300-$400 then you need relays wiring and some GM sensors.
-Kevin
________________________________________ 95 Eclipse RS - Rolled 96 Eclipse GS - Traded 95 Eclipse GSX- Sold 01 Blazer LS 4.3/5spd dropped and clean DD 88 Camaro RS 361 CID with a 6spd and a bar 10 second street car on motor.
#102727, "RE: rev limit/and turbo ?" In response to Reply # 12
Originally posted by rykki price not bad, but how har is this to install, and what do i benefit from it???
If you look up at the top of this forum, there is a Tuning section. Inside are all kinds of threads about people setting up MSnS on their cars. Basically, it's like a stand alone for your car. You still use the stock ECU, but the MSnS can control all your fuel and spark. This allows you to move the rev limter wherever you like and make sure you have the fuel and spark to handle it.
Spend some time reading around in there. MSnS is the least expensive way to get near stand alone tunability for your car. And it's barely more than the SAFC.
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