|
I know there are a lot of very positive experiences (fan boys might be too strong of a phrase here, hahaha) of their EFI ITB installs. Has anyone every first hand or second hand (through a friend's car, etc) every had a mediocre or negative experience?
The reason why I ask is because my 1985 3.2 euro engine has really woken up lately at the about 20k miles mark after a crank up rebuild, reusing the higher compression pistons, stronger chains and fly cutting the heads (cams and other major upgrades were not done). During the 20k miles period, I did the following:
- SSIs and Monty 2 in - 1 out muffler with appropriate 3.2 euro / SSI / sport muffler Steve Wong chip (no smog on my engine with euro spec, no O2 sensor either)
- larger K&N style air filter with a pre-existing aftermarket throttle body intake tube (before rebuild, like my lightweight seats, front and rear fiberglass bumpers and deck lid)
The car also has a factory euro 85 transmission and the car revs through 1st gear quite to very quickly. In comparison, I spoke to and sold some used RSR Rota Foxes to Dan McIntee in the northern WA area recently. His latest project was a turbo charged SC which is so quick through 1st gear that he deemed it basically useless and wanted to buy my 17" Rotas to put larger diameter tires compared to factory spec so the ratio would hopefully make the gearing more appropriate to the high hp turbo platform (usually we want to reduce the ration or the rim weight here). Now, I'm not thinking that an EFI ITB kit will give me performance like Dan's turbo SC where 1st gear is deemed useless because you have to shift so quickly after initial takeoff, but I am thinking about how much more an EFI ITB setup is going to get me if my car is pulling so strong in 1st (and the other gears, of course)? People have said 15%+ hp / torque with an almost instant and flat torque curve going to an EFI ITB setup. Do you think my engine has that much left in it? I have no plans to open up the transmission and change any gears. A factory or similar (geared for aggressive street) LSD would be something I might consider.
I would be quite disappointed if pre and post EFI ITB upgrade produced similar results if there was not much left to dig out of my engine performance capabilities. I hope I am wrong and I get numbers similar to Steve's car (I know his last dyno numbers set a new high bar for a standard 3.2).
FYI, I am running 215/45ZR17 and 245/40ZR17 tires on my current 7.5" & 9" x 17" RSR Rota Foxes, which matches the factory 16" tire ratios with Fuchs.
Would like to hear your thoughts and TIA,
Scott
__________________
72 911 T Targa in Orient Red / Black - more like a 85 Euro RS IROC now
- 85 Euro 3.2 with x-faktory EFI ITB + SSI + Dansk, 915 + Wevo, flares + IROC bumpers + duck tail, RS door panels, Corbeau LG1 microsuede seats, Speedware harness bar + drop links + Scroth DOT harnesses, adj Tarett sways, sport shocks, alloy trailing arms, Elephant Racing oil lines + spring plates + bushings, RSR Rota Foxes + Bridgestone S-04 PP, 2450 lbs
Last edited by sbrown.nw; 12-04-2020 at 04:56 PM..
|